CN105372372B - A kind of detection method of febuxostat tablet - Google Patents

A kind of detection method of febuxostat tablet Download PDF

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CN105372372B
CN105372372B CN201510880714.0A CN201510880714A CN105372372B CN 105372372 B CN105372372 B CN 105372372B CN 201510880714 A CN201510880714 A CN 201510880714A CN 105372372 B CN105372372 B CN 105372372B
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febuxostat
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张观福
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Guizhou Xinbang Pharmaceutical Co Ltd
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    • A61K9/2022Organic macromolecular compounds
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    • A61K9/28Dragees; Coated pills or tablets, e.g. with film or compression coating
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    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N30/00Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
    • G01N30/02Column chromatography
    • G01N2030/022Column chromatography characterised by the kind of separation mechanism
    • G01N2030/027Liquid chromatography

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Abstract

The present invention provides a kind of detection method of febuxostat tablet, the tablet calculates by weight, is made of 40~120 parts of Febuxostats, 95~165 parts of microcrystalline celluloses, 20~60 parts of lactose, 10~27 parts of Ac-Di-Sols and 1~3 part of magnesium stearate;The detection method includes character, discriminating, inspection and assay project;Wherein differentiate it is that the Febuxostat in preparation is differentiated;Inspection is to carry out related material, dissolution rate, microbial limit and weight differential to this preparation respectively to check;Assay is that Febuxostat is measured.The present invention establishes system, complete, effective quality determining method, achieveed the purpose that it is effective control drug quality, ensure that product quality stabilization and clinical application safely, effectively.

Description

A kind of detection method of febuxostat tablet
It is on December 14th, 2012 applying date that the application, which is, Application No. 2012105440901, a kind of entitled " non-cloth The divisional application of the application for a patent for invention of sotan tablet and preparation method thereof and detection method ".
Technical field
The present invention relates to a kind of febuxostat tablet and preparation method thereof and detection method, belong to technical field of western medicines.
Background technology
One group of different substantiality disease that gout increases for blood uric acid caused by purine metabolic disturbance and (or) sour acatharsia.Second After secondary world war, as the raising of various countries' economic level, the change of dietary structure, population aging, service life extend, high lithemia Mass formed by blood stasis is as the high morbidity of the elderly.
Gout is exactly the common disease of the developed countries such as America and Europe from ancient times.In the past 20 years, Asia hyperuricemia and gout Illness rate have the trend significantly increased.
Allopurinol is that clinically only one is used for the medicine for suppressing uric acid generation, and as the gold curative of gout Thing is widely used in clinic, but is tieed up since allopurinol only has inhibitory action to the XOR of reduced form, it is necessary to repeat heavy dose of administration Hold higher levels of drugs.Many patients are to Allopurinol allergy, invalid or be not resistant to.And Febuxostat (febuxostat) is then It is a species specificity xanthine oxidase inhibitor.Compared with Allopurinol, Febuxostat prevent gout break out the effect of and medicine The incidence of adverse reaction is similar, but suppresses uric acid generation intensity higher.Existing European Union ratifies its application for quotation with FDA, is used for The treatment of the chronic excessive disease gout of uric acid.Clinical study results show:The Clinical efficacy and security of Febuxostat have Satisfactory result.
But since Febuxostat is purine analogue, inevitably causes to be related to purine and pyridine is metabolized other enzymes The influence of activity, therefore be administered in allopurinol treatment, it is necessary to repeat heavy dose to maintain higher levels of drugs, it have impact on non- The treatment curative effect of cloth sotan.
In addition, at present to Febuxostat medicine also without a set of stringent reliable quality inspection standard.If without stringent Quality standard, obtained product cannot ensure its quality, as a result will influence the clinical efficacy of the medicine;It is so non-to improve The therapeutic effect of cloth sotan medicine, it is ensured that medication safely, effectively and product quality stabilization, formulate a stringent reliable matter Amount standard becomes the basic demand ensured drug quality.With the development of Modern Instrument Analytical Technique, high performance liquid chromatography etc. Analysis method is more and more widely used in the quality control of medicine.
The content of the invention
It is an object of the present invention to provide a kind of febuxostat tablet and preparation method thereof and detection method.Pin of the present invention To the deficiencies in the prior art, the prescription and preparation process of febuxostat tablet are optimized, make it to hyperuricemia and The effect of diseases such as gout, is more notable, and establish system, complete, effective component differentiates and content assaying method, The quality of the medicine can be effectively controlled, so that it is guaranteed that its clinical efficacy.
Technical scheme:A kind of febuxostat tablet, calculates by weight, be by 40~120 parts of Febuxostats, 95~165 parts of microcrystalline celluloses, 20~60 parts of lactose, 10~27 parts of Ac-Di-Sols and 1~3 part of magnesium stearate system Into.
Preferable febuxostat tablet is by 80g Febuxostats, 110g microcrystalline celluloses, 40g lactose, 18g crosslinking carboxylic first Made of base sodium cellulosate and 2g magnesium stearates.
The preparation method of foregoing febuxostat tablet comprises the following steps:
(1) preparation of label:
1. taking Febuxostat, lactose, 80 mesh sieve nets are crossed respectively, it is spare;
2. Febuxostat is uniformly mixed with microcrystalline cellulose, lactose, partial cross-linked sodium carboxymethylcellulose, add appropriate Purified water softwood, the granulation of 18 mesh sieve nets, 70 DEG C of dryings, 18 mesh sieve whole grains, add surplus cross-linked carboxymethyl fiber sodium and hard Fatty acid magnesium, is uniformly mixed;
3. intermediate detects, tabletting after qualification, obtains plain piece;
(2) film coating:
1. taking ethanol, purified water to be placed in blender, premix coating powder is added in the case where being stirred continuously, continues to stir 1 it is small when, coating solution is filtered with 100 mesh sieve nets, spare;
2. plain piece is placed in coating pan, opens coating pan and start air draft and dust exhaust apparatus, while with 40 DEG C~45 DEG C Hot-air pre-heating, is heated evenly plain piece, and sops up the fine powder being adsorbed in plain piece;Coating pan is started, regulates coating solution spraying Granularity and spray velocity, on the label that prepared Coating Solution is equably sparged to rotation;After coating, continue with cold Air-dry dry 10 minutes, coating weight gain 3%-5%.
In the preparation method of foregoing febuxostat tablet, mixing with tabletting filling process, ambient humidity control exists Less than 50%.
The detection method of foregoing febuxostat tablet includes character, discriminating, inspection and assay project;Wherein differentiating is Febuxostat in preparation is differentiated;Inspection be this preparation is carried out respectively related material, dissolution rate, microbial limit and Weight differential is checked;Assay is that Febuxostat is measured.
Concrete content assay method is:
Chromatographic condition and system suitability:It is filler with octadecylsilane chemically bonded silica;Mobile phase is first Alcohol-with triethylamine tune pH be 5.0 0.3% acetic acid=70:30, detected using UV, Detection wavelength 317nm, flow velocity is 1.0mL/min;Number of theoretical plate is calculated by Febuxostat peak, should be not less than 2000;
Determination method:20, this preparation is taken, accurately weighed, finely ground, precision weighs the fine powder equivalent to Febuxostat 10mg, puts In 50mL measuring bottles, add methanol ultrasound to dissolve Febuxostat and be diluted to scale, shake up, filter, take subsequent filtrate 5mL, put 25mL In measuring bottle, methanol dilution is added to be shaken up, as test solution to scale;Another precision weighs Febuxostat reference substance 10mg and puts In 50mL measuring bottles, add methanol appropriate, ultrasound makes dissolving, adds methanol to scale, and the accurate 5mL that measures is put in 25mL measuring bottles respectively, is added Methanol dilution shakes up, as reference substance solution to scale;Precision measures above-mentioned reference substance solution and each 10 μ L of test solution, Liquid chromatograph is injected separately into, records chromatogram.
Specifically discrimination method is:
(1) liquid phase differentiates:Under assay item, the retention time of the retention time of test sample main peak with reference substance peak Unanimously;
(2) ultraviolet discriminating:This preparation fine powder equivalent to Febuxostat 6mg is taken, is put in 100mL measuring bottles, adds methanol ultrasonic Dissolve Febuxostat and be diluted to scale, shake up, filter, take subsequent filtrate 5mL, put in 50mL measuring bottles, add methanol dilution to quarter Degree, shakes up, reference《Chinese Pharmacopoeia》The UV-VIS spectrophotometry of two IV A of annex of version in 2010 is measured, There is absorption maximum at the wavelength of 215nm and 315nm.
Particular exam method is:
(1) dissolution rate:Concrete operations are as follows:Take this preparation, reference《Chinese Pharmacopoeia》Two Ⅹ C of annex of version in 2010 The dissolution method of two methods, using the 1000mL phosphate buffers of pH=6.8 as dissolution medium, rotating speed is 50 turns per minute, Operate in accordance with the law, and 10mL was sampled in 30 minutes, filtration, takes subsequent filtrate 2mL, put in 25mL measuring bottles, and solubilization goes out medium to quarter Degree, shakes up, as test solution;Another precision weighs Febuxostat reference substance 16mg, puts in 50mL measuring bottles, adds methanol dissolving simultaneously Scale is diluted to, is shaken up, then precision pipettes 2mL and puts in 100mL measuring bottles, solubilization goes out medium to scale, shakes up, as control Product solution;Reference《Chinese Pharmacopoeia》The spectrophotometry of the two record IV A of version in 2010, measures trap at 317nm wavelength; Calculate the stripping quantity of every;
(2) related material:
Chromatographic condition and system suitability:It is filler with octadecylsilane chemically bonded silica;Mobile phase is first Alcohol-with triethylamine tune pH be 5.0 0.3% acetic acid=70:30, detected using UV, Detection wavelength 317nm, flow velocity is 1.0mL/min;Number of theoretical plate is calculated by Febuxostat peak, should be not less than 2000;
Determination method:This preparation piece powder equivalent to the 10mg containing Febuxostat is taken, puts in 50mL measuring bottles, adds methanol appropriate, is surpassed Sound makes dissolving, lets cool, and adds methanol dilution to shake up to scale, filter, take subsequent filtrate as test solution;Precision pipettes again Test solution 1mL is stated, with methanol dilution into 1% own control product solution;Another precision weighs impurity A reference substance 10mg, uses first The amount that alcohol is diluted to the impure A of every 1mL is 2 μ g, as reference substance solution, takes each 10 μ of above-mentioned test solution, reference substance solution L injecting chromatographs, record chromatogram;In test solution chromatogram, if any impurity A peak, calculated, should be not greater than with external standard method 1%;In addition to solvent peak and auxiliary material peak, the sum of peak area of other impurities should be not more than 1 times of own control peak area;
(3) microbial limit:Take this preparation, reference《Chinese Pharmacopoeia》The method of two Ⅺ J of annex in 2010 calculates;
(4) weight differential:This preparation is taken, it is accurately weighed, average piece weight, then weight every accurately weighed respectively are calculated, It should meet《Chinese Pharmacopoeia》The regulation of two I A of annex of version in 2010.
The detection method includes:
(1) character:This preparation is Film coated tablets, after removing coating, whitening color or off-white color;
(2) assay:
Chromatographic condition and system suitability:It is filler with octadecylsilane chemically bonded silica;Mobile phase is first Alcohol-with triethylamine tune pH be 5.0 0.3% acetic acid=70:30, detected using UV, Detection wavelength 317nm, flow velocity is 1.0mL/min;Number of theoretical plate is calculated by Febuxostat peak, should be not less than 2000;
Determination method:20, this preparation is taken, accurately weighed, finely ground, precision weighs the fine powder equivalent to Febuxostat 10mg, puts In 50mL measuring bottles, add methanol ultrasound to dissolve Febuxostat and be diluted to scale, shake up, filter, take subsequent filtrate 5mL, put 25mL In measuring bottle, methanol dilution is added to be shaken up, as test solution to scale;Another precision weighs Febuxostat reference substance 10mg and puts In 50mL measuring bottles, add methanol appropriate, ultrasound makes dissolving, adds methanol to scale, and the accurate 5mL that measures is put in 25mL measuring bottles respectively, is added Methanol dilution shakes up, as reference substance solution to scale;Precision measures above-mentioned reference substance solution and each 10 μ L of test solution, Liquid chromatograph is injected separately into, records chromatogram;
(3) differentiate:
(1) liquid phase differentiates:Under assay item, the retention time of the retention time of test sample main peak with reference substance peak Unanimously;
(2) ultraviolet discriminating:This preparation fine powder equivalent to Febuxostat 6mg is taken, is put in 100mL measuring bottles, adds methanol ultrasonic Dissolve Febuxostat and be diluted to scale, shake up, filter, take subsequent filtrate 5mL, put in 50mL measuring bottles, add methanol dilution to quarter Degree, shakes up, reference《Chinese Pharmacopoeia》The UV-VIS spectrophotometry of two IV A of annex of version in 2010 is measured, There is absorption maximum at the wavelength of 215nm and 315nm;
(4) check:
(1) dissolution rate:Concrete operations are as follows:Take this preparation, reference《Chinese Pharmacopoeia》Two Ⅹ C of annex of version in 2010 The dissolution method of two methods, using the 1000mL phosphate buffers of pH=6.8 as dissolution medium, rotating speed is 50 turns per minute, Operate in accordance with the law, and 10mL was sampled in 30 minutes, filtration, takes subsequent filtrate 2mL, put in 25mL measuring bottles, and solubilization goes out medium to quarter Degree, shakes up, as test solution;Another precision weighs Febuxostat reference substance 16mg, puts in 50mL measuring bottles, adds methanol dissolving simultaneously Scale is diluted to, is shaken up, then precision pipettes 2mL and puts in 100mL measuring bottles, solubilization goes out medium to scale, shakes up, as control Product solution;Reference《Chinese Pharmacopoeia》The spectrophotometry of two IV A of record of version in 2010, measures trap at 317nm wavelength; Calculate the stripping quantity of every;
(2) related material:
Chromatographic condition and system suitability:It is filler with octadecylsilane chemically bonded silica;Mobile phase is first Alcohol-with triethylamine tune pH be 5.0 0.3% acetic acid=70:30, detected using UV, Detection wavelength 317nm, flow velocity is 1.0mL/min;Number of theoretical plate is calculated by Febuxostat peak, should be not less than 2000;
Determination method:This preparation piece powder equivalent to the 10mg containing Febuxostat is taken, puts in 50mL measuring bottles, adds methanol appropriate, is surpassed Sound makes dissolving, lets cool, and adds methanol dilution to shake up to scale, filter, take subsequent filtrate as test solution;Precision pipettes again Test solution 1mL is stated, with methanol dilution into 1% own control product solution;Another precision weighs impurity A reference substance 10mg, uses first The amount that alcohol is diluted to the impure A of every 1mL is 2 μ g, as reference substance solution, takes each 10 μ of above-mentioned test solution, reference substance solution L injecting chromatographs, record chromatogram;In test solution chromatogram, if any impurity A peak, calculated, should be not greater than with external standard method 1%;In addition to solvent peak and auxiliary material peak, the sum of peak area of other impurities should be not more than 1 times of own control peak area;
(3) microbial limit:Take this preparation, reference《Chinese Pharmacopoeia》The method of two Ⅺ J of annex in 2010 calculates;
(4) weight differential:This preparation is taken, it is accurately weighed, average piece weight, then weight every accurately weighed respectively are calculated, It should meet《Chinese Pharmacopoeia》The regulation of two I A of annex of version in 2010.
Prescription and preparation process science, reasonable, feasible, applicant in order to ensure febuxostat tablet of the present invention Series of experimental research and investigation are carried out.
First, formulation study:
1st, bulk pharmaceutical chemicals property
Febuxostat is white or off-white color crystalline powder;It is insoluble in water.Therefore, when drafting the prescription of tablet, The dissolution rate of medicine is an aspect considered emphatically.
2nd, the property of auxiliary material and selection
It was found from from the relevant information of the ADENURIC of European Union's approval, the auxiliary material used in ADENURIC is lactose, crystallite Cellulose, magnesium stearate etc..
Lactose compact property is good, and uses lactose unilateral more smooth as filler, and appearance is preferable.
Microcrystalline cellulose has good mobility and compressibility as filler, and water swelling is disintegrated rapidly, after disintegration Particle is very thin
Ac-Di-Sol has extremely strong disintegration ability.It is especially suitable for the strong medicine of hydrophobicity.
Magnesium stearate is lubricant, is easy to particle mixing, makes unilateral smooth.
3rd, prescription screening
Since Febuxostat is practically insoluble in water, when carrying out prescription screening mainly with disintegration time limited of tablet, molten Out-degree etc. is main inspection target, the results are shown in Table 1.
1 prescription screening result of table
Supplementary material title Prescription 1 Prescription 2 Prescription 3 Prescription 4
Febuxostat 4.0g 4.0g 4.0g 4.0g
Microcrystalline cellulose 8.1g 6.8g 5.5g 5.5g
Lactose ―― 1.0g 2.0g 2.0g
Ac-Di-Sol 0.3g (outer) 0.6g (outer) 0.9g (outer) 0.5g (outer) 0.4g (interior)
Magnesium stearate 0.1g 0.1g 0.1g 0.1g
Appearance character It is unilateral slightly rough It is unilateral slightly rough It is unilateral bright and clean Unilateral bright and clean beauty
Disintegration time limited (min) 20 14 8 7
Dissolution rate surveys (%) ---- ---- 81.3 88.6
As a result:Piece weight is designed in four prescriptions in 0.25g, does not add lactose in prescription 1, it is unilateral that some are coarse, and The disintegration and dissolution of tablet are not ideal;The dosage of lactose and disintegrant is increased in prescription 2, disintegration time and dissolution are Improve, but it is undesirable;The dosage of disintegrant is increased in prescription 3, increases unilateral bright and clean beauty after lactose dosage, but The accidental particle not being disintegrated in disintegrating procedue.So by the disintegrant for having half in prescription 4 be changed in plus, disintegration time limited and molten Go out to meet the requirements, it is ideal.
Conclusion:Tentatively by the prescription of prescription 4 as study on the stability prescription.
2nd, Study of operational conditions
1st, the selection of adhesive
Since Febuxostat material is more puckery, its mobility is not good enough, therefore uses wet granule compression tablet technique, and to adhesive Screened.
Mixed powder is prepared according to prescription 4, it is viscous that 50% ethanol solution, purified water, 2%PVP-k30 aqueous solutions, which is respectively adopted, Mixture is pelletized, observing effect, and is screened.It the results are shown in Table 2.
2 adhesive the selection result of table
Note:18 mesh sieve granulating process are used above.
Conclusion:Using 50% ethanol as adhesive, material viscosity is larger, can not pelletize;Using water and 2%PVP-k30 Aqueous solution is as adhesive, and particle is uniform, and completely, good fluidity, tablet weight variation is small, both are without significant difference, from simple process And economic angle considers, directly using purified water as adhesive.
2nd, the measure of critical relative moisture
For the preparation of solid pharmaceutical preparation, the moisture absorption of drug powder is a ring that must be paid close attention in preparation process Section.The critical relative moisture of drug powder must be measured, and operating environment is controlled by.
Method:CH is prepared respectively3COOK、MgCl2、KNO3、NaBr、NaCl、KCl、KNO2Saturated solution, by the full of preparation Be respectively implanted with solution in silica gel drier, in 25 DEG C place 72 it is small when, respectively obtain relative humidity for 20.0%, 33.0%, 42.8%th, 59.7%, 75.3%, 84.3%, 92.5% constant humidity solution.
When by the medicinal mixture prepared, drying 48 is small in phosphorus pentoxide desiccator, in the measuring cup of constant weight Bottom is put into the mixture of 2g or so, after precision weighing, is placed in the drier for filling 7 kinds of different saturated solutions and keeps 72 small When, precise weighing, calculates Moisture percentage, the results are shown in Table 3.
The Moisture percentage of medicinal powder under the different relative humidity of table 3
Solution RH% (25 DEG C) Moisture percentage (%)
CH3COOK 20.0 1.98
MgCl2 33.0 2.22
KNO3 42.8 2.44
NaBr 59.7 3.82
NaCl 75.3 5.93
KCl 84.3 8.26
KNO2 92.5 11.14
Using hydroscopicity data as ordinate, relative humidity data is mapped for abscissa, the result is shown in Figure 1.It can be seen by Fig. 1 Go out, moisture absorption is remarkably reinforced more than 50%, accordingly, it can be determined that the critical relative moisture of finished product is 50%.Filled out in mixing and tabletting During filling, ambient humidity is controlled below 50%.
3rd, formulation and technology checking test
Method:The prescription determined with screening process, prepares 200 (lot numbers of sample:080909), and film coating, with element Piece hardness, coating tablet appearance, tablet weight variation, dissolution rate, in relation to material and content be inspection target, is evaluated.
1st, appearance
This preparation is Film coated tablets, removes film-coating and shows off-white color.
2nd, tablet weight variation inspection
Coating tablet 20 is taken at random, successively precision weighing piece weight, record numerical value, piece average weight 0.2581g, maximum positively biased Poor 3.3%, maximum minus deviation 4.4%, meets pharmacopeia relevant regulations.
3rd, Determination of Hardness
The hardness of plain piece has important influence to coating, generally requires piece hardness in more than 5Kg.Take 10 under tablet weight variation item Piece, measures hardness, the results are shown in Table 4.
4 Determination of Hardness result of table
Sample number Hardness (Kg)
1 6.25
2 7.23
3 7.56
4 8.22
5 7.56
6 7.88
7 7.33
8 7.96
9 7.14
10 7.37
Average piece weight is 7.45Kg, and hardness is moderate, is adapted to coating.
4th, assay
The sample under tablet weight variation item is taken, is measured according to method under assay item, assay result is 100.5%.
5th, Dissolution Rate Testing
This preparation is taken, is measured according to method under quality standard Dissolution Rate Testing item, is as a result 95.5%.
Conclusion:The dissolution rate of preproduction is can be seen that more than 80% from above-mentioned dissolution test result, and drug-eluting is good It is good, meet regulation.
6th, related substance-measuring
It is measured by the related substance-measuring method of quality standard, impurity A result is 0.387%;Other related material knots Fruit is 0.059%.
The study on determination method of impurity A (i.e. Febuxostat hydrolysate), refers to the applicant and present specification on the same day The patent application document of entitled " preparation method and detection method of a kind of febuxostat raw material " submitted.
7th, the investigation of influence factor
(1) exposure experiments to light:
This preparation is taken, illumination is put and is irradiated 10 days for 4500LX ± 500LX, sampled by 0,5,10 day, measures indices, knot Fruit is shown in Table 5.
5 febuxostat tablet exposure experiments to light result of table
Result of the test shows that this preparation illumination 5,10 days, compared with 0 day, indices have no significant change indices.
(2) hot test
This preparation is taken, is placed 10 days at a temperature of putting 60 DEG C, was sampled by 0,5,10 day, indices is measured, the results are shown in Table 6.
6 febuxostat tablet hot test result of table
Result of the test shows that 60 DEG C are placed 5,10 days, and indices indices compared with 0 day have no significant change.
(3) high humility is tested
This preparation is taken, is put in constant-temperature enclosed vessel, at 25 DEG C under the conditions of relative humidity 92.5% and 75% ± 1% Place 10 days, sampled by 0,5,10 day, during 92.5% condition of relative humidity, difference moisture absorption 13.2% and 14.4% in 5,10 days;Phase During to 75% ± 1% condition of humidity, difference moisture absorption 1.8% and 2.1% in 5,10 days;So take 75% ± 1% condition of relative humidity When sample, measure indices, the results are shown in Table 7.
7 febuxostat tablet high humility result of the test of table
Result of the test shows that relative humidity 75% ± 1% is placed 5,10 days, and for indices compared with 0 day, indices are equal Without significant change.
In addition, in order to ensure detection method science, reasonable, feasible, applicant carried out series of experimental research And investigation.
First, character:It is Film coated tablets to measure four batches of samples, except off-white color is shown after coating, the results are shown in Table 8.
8 measurement result of table
2nd, differentiate
1st, in the chromatogram recorded under assay item, the retention time of test solution main peak should be with reference substance solution Main peak it is consistent.Identification result is shown in Table 9.
2nd, intend, using x powder diffractions measure Febuxostat crystal form characteristic peak, after measuring respectively using raw material and auxiliary material, finding Auxiliary material has an impact crystal form measure, therefore does not use.
3rd, ultraviolet discriminating:Take this preparation fine powder appropriate (being approximately equivalent to Febuxostat 6mg), put in 100mL measuring bottles, add methanol Ultrasound dissolves Febuxostat and is diluted to scale, shakes up, and filtration, takes subsequent filtrate 5mL, put in 50mL measuring bottles, add methanol dilution To scale, shake up, reference《Chinese Pharmacopoeia》The UV-VIS spectrophotometry measure of two IV A of annex of version in 2010, There is absorption maximum at the wavelength of 215nm and 315nm.It the results are shown in Table 9.
Table 9 differentiates measurement result
3rd, check
1st, weight differential:Febuxostat tablet 20 is taken, it is accurately weighed, average piece weight is calculated, then it is every accurately weighed respectively Weight.For the weight of every compared with being averaged piece again, limit test of weight variation is ± 7.5%, measures four batches, the results are shown in Table 10.
10 inspection result of table
2nd, limit test of microbe:Take febuxostat tablet, reference《Chinese Pharmacopoeia》The method of two Ⅺ J of annex in 2010, Measure four batches, the results are shown in Table 11.
11 limit test of microbe result of table
3rd, the methodological study of dissolution rate and measure
3.1 instrument:ZRS-8G type medicament dissolution instruments;6010 ultraviolet-visible spectrophotometer of Agilent.
3.2 measured concentrations determine:Febuxostat bulk pharmaceutical chemicals about 8mg is taken, is put in 100mL measuring bottles, adds methanol ultrasonic dissolution And scale is diluted to, shake up, then measure 1mL, 2mL, 3mL, 5mL respectively and respectively put in 25mL measuring bottles, scale is diluted with water to, is shaken It is even, reference《Chinese Pharmacopoeia》UV, visible light-spectrophotometry of two IV A of annex of version in 2010, measures at 317nm wavelength Trap, the trap for as a result measuring the solution that 2mL puts 25mL measuring bottles are more suitable.
3.3 febuxostat tablets of the present invention (use novel crystal forms, its crystal form preparation method refers to the applicant and this Shen Please a kind of patent application document of entitled " preparation method and detection method of febuxostat raw material " submitted on the same day of file) Dissolution situation in various media and the piece with Febuxostat (patent crystal form, its patent publication No. are CN1275126A) preparation Comparative studies.
Take sample, reference《Chinese Pharmacopoeia》The dissolution method of two annex of version in 2010, Ⅹ the second methods of C, respectively with The water of 1000mL, 0.1mol/L hydrochloric acid solutions, (9.15g citric acids, 40.43g dipotassium hydrogen phosphates, add water to the buffer salt of pH=5.5 To 1000mL) and phosphate buffer (pH=6.8) be dissolution medium, rotating speed is set to 100 turns per minute, operates in accordance with the law, through 5, 10th, 20,30,45,60 minutes when, separately sampled 10mL (while fluid infusion 10mL), filtration, precision pipettes subsequent filtrate 2mL, puts 25mL In measuring bottle, solubilization goes out medium to scale, shakes up, as test solution.Precision is weighed in Febuxostat reference substance 16mg, Put in 50mL measuring bottles, add methanol to dissolve and be diluted to scale, shake up, then precision pipettes 2mL, puts in 100mL measuring bottles, solubilization goes out to be situated between Matter is diluted to scale, shakes up, as reference substance solution.Take above two solution, reference《Chinese Pharmacopoeia》Version two is attached within 2010 The spectrophotometry of IV A is recorded, trap is measured at 317nm wavelength, calculates the stripping quantity of every.It the results are shown in Table 12 and figure 2。
Measurement result in 12 two kinds of each media of crystal form of table
From the data and stripping curve of two kinds of crystal form difference dissolution mediums, novel crystal forms prepared by the present invention are brilliant with patent The In Vitro Dissolution behavior of sample prepared by type is basically identical.
3.4 auxiliary material interference tests
Take the blank auxiliary appropriate (being approximately equivalent to contain Febuxostat 16mg) of this preparation to put in 50mL measuring bottles, add methanol to dissolve And scale is diluted to, shake up, then precision pipettes 2mL, puts in 100mL measuring bottles, is diluted with water to scale, shakes up, and takes above-mentioned solution, Reference《Chinese Pharmacopoeia》The spectrophotometry of two IV A of annex of version in 2010, measures trap at 317nm wavelength, as a result auxiliary Expect not interference measurement.
The selection of 3.5 rotating speeds
Take febuxostat tablet, reference《Chinese Pharmacopoeia》The dissolution method of two annex of version in 2010, Ⅹ the second methods of C, With 1000mL phosphate buffers (pH=6.8) for dissolution medium, rotating speed is is set to 50,75,100 turns per minute, in accordance with the law Operation, during through 5,10,20,30,45,60 minutes, separately sampled 10mL, (and fluid infusion 10mL at the same time) filtration, precision pipettes continuous filter Liquid 2mL, puts in 25mL measuring bottles, and solubilization goes out medium to scale, shakes up, as test solution.Precision is weighed in Fei Busuo Smooth reference substance 16mg, puts in 50mL measuring bottles, adds methanol to dissolve and is diluted to scale, shakes up, then precision pipettes 2mL, puts 100mL amounts In bottle, solubilization goes out medium to scale, shakes up, as reference substance solution.Take above two solution, reference《Chinese Pharmacopoeia》 The spectrophotometry of two IV A of annex of version in 2010, measures trap at 317nm wavelength.Calculate the stripping quantity of every. It the results are shown in Table 13.
The measure of 13 selection of speed of table
When rotating speed is 50 revs/min, 75 revs/min and 100 revs/min, the dissolution rate of 45 minutes this preparations exists this preparation 90% or so, it is contemplated that the measure of dissolution rate has selected compared with the slow-speed of revolution, the dissolution of this preparation the situation of quality of the pharmaceutical preparations resolution capability The rotating speed of degree measure is set to 50 turns per minute, and sample time is 30 minutes.
3.6 dissolution method
The Dissolution Rate Testing condition and method of this preparation, reference《Chinese Pharmacopoeia》Two Ⅹ C of annex of version in 2010 are tried Test.The dissolution medium of this preparation selects 1000mL phosphate buffers (pH=6.8);Using《Chinese Pharmacopoeia》Version two in 2010 Ⅹ the second methods of C of annex, rotating speed are 50 revs/min, are sampled within 30 minutes, using the dissolution rate of UV method determination samples.
3.7 linear relationship
Precision weighs febuxostat raw material medicine 12.8mg, puts in 100mL measuring bottles, adds methanol to dissolve and is diluted to scale, shakes Even, precision measurement 1,3,5,7,10mL are put in 100mL measuring bottles respectively, and solubilization goes out medium to scale, shakes up, reference《China Pharmacopeia》The spectrophotometry of two IV A of record of version in 2010, measures trap at 317nm wavelength.It the results are shown in Table 14 and Fig. 3.
The measure of 14 working curve of table
Concentration (μ g/mL) 1.287 3.861 6.435 9.009 12.870
Trap (A) 0.094 0.281 0.457 0.653 0.912
From the figure 3, it may be seen that linear equation is Y=0.0708X+0.0054, R2=0.9996 shows in 1.287-12.870 μ g/ It is in good linear in mL concentration ranges.
3.8 stability test
It is appropriate (containing about Febuxostat 16mg) that precision weighs this preparation piece powder, puts in 50mL measuring bottles, adds methanol to dissolve and dilute Release to scale, shake up, filter, take subsequent filtrate 2mL to put in 100mL measuring bottles, solubilization goes out medium to scale, shakes up, as confession Test sample solution.Above-mentioned solution, reference are taken when 0,1,2,3,4 is small《Chinese Pharmacopoeia》The light splitting of two IV A of record of version in 2010 Photometry, measures trap at 317nm wavelength.It the results are shown in Table 15.
The measure of 15 stability test of table
Time (h) 0 1 2 3 4 It is average Rsd%
Trap (A) 0.437 0.429 0.433 0.435 0.430 0.433 0.77
3.9 recovery test
Precision weighs each three parts of febuxostat raw material medicine 9.6mg, 16mg, 19.2mg, puts respectively in 50mL measuring bottles, and by place Square ratio adds various auxiliary materials, adds methanol to dissolve and is diluted to scale, shakes up, and filters, takes subsequent filtrate 2mL to put in 100mL measuring bottles, Solubilization goes out medium to scale, shakes up, as test solution.Another precision weighs Febuxostat reference substance 16mg, puts 50mL In measuring bottle, add methanol to dissolve and be diluted to scale, shake up, then precision pipettes 2mL and puts in 100mL measuring bottles, solubilization goes out medium To scale, shake up, as reference substance solution.Above-mentioned solution, reference are taken respectively《Chinese Pharmacopoeia》Two IV A of annex of version in 2010 Spectrophotometry, at 317nm wavelength measure trap.It the results are shown in Table 9.
16 determination of recovery rates result of table
The measure of 3.10 stripping curves
Take this preparation (four batches), reference《Chinese Pharmacopoeia》The dissolution determination of two annex of version in 2010, Ⅹ the second methods of C Method, with 1000mL phosphate buffers (pH=6.8) for dissolution medium, rotating speed is 50 turns per minute, is operated in accordance with the law, and in 5, 10th, 20,30,45,60 minutes separately sampled 10mL (and fluid infusion 10mL at the same time), filtration, take subsequent filtrate 2mL, put in 25mL measuring bottles, Solubilization goes out medium to scale, shakes up, as test solution;Another precision weighs Febuxostat reference substance 16mg, puts 50mL In measuring bottle, add methanol to dissolve and be diluted to scale, shake up, then precision pipettes 2mL and puts in 100mL measuring bottles, solubilization goes out medium To scale, shake up, as reference substance solution.Above-mentioned solution, reference are taken respectively《Chinese Pharmacopoeia》Two IV A's of record of version in 2010 Spectrophotometry, measures trap at 317nm wavelength.It the results are shown in Table 17.
The measure of 17 stripping curve of table
The measure of 3.11 dissolution rates
Take this preparation (four batches), reference《Chinese Pharmacopoeia》The dissolution method of two the second methods of annex XC of version in 2010, With 1000mL phosphate buffers (pH=6.8) for dissolution medium, rotating speed is 50 turns per minute, is operated in accordance with the law, and in 30 minutes Separately sampled 10mL (and fluid infusion 10mL at the same time), filtration, takes subsequent filtrate 2mL, puts in 25mL measuring bottles, and solubilization goes out medium to quarter Degree, shakes up, as test solution;Another precision weighs Febuxostat reference substance 16mg, puts in 50mL measuring bottles, adds methanol dissolving simultaneously Scale is diluted to, is shaken up, then precision pipettes 2mL and puts in 100mL measuring bottles, solubilization goes out medium to scale, shakes up, as control Product solution.Reference《Chinese Pharmacopoeia》The spectrophotometry of two IV A of record of version in 2010, measures trap at 317nm wavelength. It the results are shown in Table 18.
18 dissolution determination result of table
Lot number 080909 081007 081008 081009
Dissolution rate (%) 95.5 96.9 98.1 98.7
4th, Related substances separation
4.1 chromatographic condition
Instrument model:Japanese Shimadzu LC-10ATvp, SPD-10Avp detector;
Chromatographic column:Using octadecylsilane chemically bonded silica as filler;
Mobile phase:The acetic acid of methanol -0.3% (triethylamine tune pH is 5.0) (70:30);
Flow velocity is 1.0mL/min, and column temperature is room temperature, and wavelength 317nm, sample size is 10 μ L.
The preparation of 4.2 test solutions
Take this preparation piece powder appropriate (being approximately equivalent to contain Febuxostat 10mg), put in 50mL measuring bottles, add methanol appropriate, ultrasound Make dissolving, let cool, add methanol dilution to shake up to scale, filter, take subsequent filtrate as test solution.
4.3 auxiliary material blank interference tests
The preparation of auxiliary material blank solution:According to prescription, this pharmaceutical adjunct blank is taken (to be approximately equivalent to contain Febuxostat in right amount 10mg), put in 50mL measuring bottles, add methanol appropriate, ultrasound makes dissolving, lets cool, and adds methanol dilution to shake up to scale, filter, take continuous Filtrate is as auxiliary material blank solution.
10 μ L sample introductions of blank solution are measured, as a result spectrogram shows that blank is noiseless.
4.4 failure test
Acid degradation product:Test solution 2mL is taken, adds 1mol/L hydrochloric acid 1mL, shakes up, half an hour is placed, with 1mol/L hydrogen Sodium oxide molybdena is adjusted to neutrality, to obtain the final product.
Alkaline degradation product:Test solution 2mL is taken, adds 1mol/L sodium hydroxide 1mL, shakes up, places half an hour, is used 1mol/L hydrochloric acid is adjusted to neutrality, to obtain the final product.
Oxidative breakdown product:Test solution 2mL is taken, adds hydrogen peroxide 2mL, shakes up, places half an hour, immediately sample introduction.
High temperature:Test solution 5mL is taken, is let cool after putting when heating 3 is small in 80 degree of baking ovens, 5mL is added to methanol.
Photo damage:Test solution 5mL is taken, when placement 3 is small under the strong light of 4500 ± 500LX, is added to after taking-up with methanol 5mL。
Each 10 μ L injecting chromatographs of above-mentioned degraded solutions are taken respectively, record spectrogram, the results showed that this formulation soln is to sour, double Oxygen water, light and high temperature are relatively stable, more unstable to alkali.
4.5 minimum detections
Take this preparation test solution 1mL to put in 100mL measuring bottles, add methanol dilution to shake up to scale, as 1% solution, 1% solution methanol dilution is taken respectively again into 0.01%, 0.02% and 0.03% solution.
Each 10 μ L sample introductions of the solution of above-mentioned 0.01%, 0.02% and 0.03% are taken respectively, record spectrogram, the results showed that this system The minimum detectable activity of agent is 0.20ng, and minimum limit of detection is 0.03%.
4.6 determination method:
Take this preparation piece powder appropriate (being approximately equivalent to contain Febuxostat 10mg), put in 50mL measuring bottles, add methanol appropriate, ultrasound Make dissolving, let cool, add methanol dilution to shake up to scale, filter, take subsequent filtrate as test solution.Precision pipettes above-mentioned again Test solution 1mL, with methanol dilution into 1% own control product solution;Another precision weighs impurity A, and (retention time is about 4 minutes Left and right) reference substance 10mg, the amount with methanol dilution into the impure A of every 1mL is 2 μ g, as reference substance solution, takes above-mentioned solution each 10 μ L injecting chromatographs, record chromatogram.In test solution chromatogram, if any impurity A peak, calculated with external standard method, should must not More than 1% (1%);In addition to solvent peak and auxiliary material peak, the sum of peak area of other impurities should be not more than the 1 of own control peak area Again (1%).Measure four batches the results are shown in Table 19.
19 Related substances separation of table
Lot number 080909 081007 081008 081009
Impurity A 0.387 0.037 0.391 0.183
Other impurities 0.059 0.048 0.048 0.068
4th, assay
The methodological study of assay is carried out using HPLC methods, and determines the content of sample.Provide containing for this preparation Amount limit is 95.0-105.0%.
1st, instrument model:Japanese Shimadzu LC-10ATvp;SPD-10Avp detectors.
2nd, chromatographic condition
It is filler with octadecylsilane chemically bonded silica;The acetic acid of methanol -0.3% (triethylamine tune pH is 5.0) (70: 30), detected using UV, Detection wavelength 317nm.Flow velocity is 1.0mL/L.
3rd, repetitive test
Take same batch of sample appropriate (containing about Febuxostat 10mg), it is six parts respectively, accurately weighed, put in 50mL measuring bottles, add Appropriate methanol, ultrasound make dissolving, add methanol to shake up, filter to scale.The accurate subsequent filtrate 5mL that measures is put in 25mL measuring bottles respectively, Methanol dilution is added to be shaken up, as test solution to scale;Another precision weighs Febuxostat reference substance 10mg and puts 50mL measuring bottles In, add methanol appropriate, ultrasound makes dissolving, adds methanol to scale, and the accurate 5mL that measures is put in 25mL measuring bottles respectively, adds methanol dilution To scale, shake up, as reference substance solution.Precision measures above-mentioned reference substance solution and each 10 μ L of test solution are injected separately into liquid Chromatography, records chromatogram, calculates the content of determination sample, the results are shown in Table 20.
The repeated measurement result of table 20
4th, test solution stability
The lower first part of test solution of repeated item is taken, takes 10 μ L to inject liquid chromatograph when 0,2,4,6,8 is small, Record chromatogram, to obtain the final product.It the results are shown in Table 21.
21 Stability Determination result of table
Time (hour)) 0 2 4 6 8 It is average RSD%
Peak area (A) × 103 1158 1165 1156 1161 1159 1159.8 0.29
5th, recovery test
Precision weighs Febuxostat reference substance 8,10, three parts of 12mg difference, puts in 50mL measuring bottles, is added in prescription ratio auxiliary Material, adds the appropriate ultrasound of methanol to dissolve Febuxostat, then adds methanol dilution to shake up, filter, precision pipettes subsequent filtrate to scale 5mL, puts in 25 measuring bottles, adds methanol dilution to be shaken up, as test solution to scale.Another precision weighs Febuxostat reference substance 10mg is put in 50mL measuring bottles, adds methanol appropriate, and ultrasound makes dissolving, adds methanol to scale, and the accurate 5mL that measures puts 25mL measuring bottles respectively In, add methanol dilution to be shaken up, as reference substance solution to scale.Precision measures above-mentioned reference substance solution and test solution is each 10 μ L are injected separately into liquid chromatograph, record chromatogram, calculate the rate of recovery.It the results are shown in Table 22.
22 determination of recovery rates result of table
6th, assay
Chromatographic condition and system suitability:It is filler with octadecylsilane chemically bonded silica;The second of methanol -0.3% Acid (triethylamine tune pH is 5.0) (70:30), detected using UV, Detection wavelength 317nm, flow velocity 1.0mL/min;Theoretical plate Number is calculated by Febuxostat peak, should be not less than 2000.
20, this preparation is taken, accurately weighed, finely ground, precision weighs appropriate (being approximately equivalent to Febuxostat 10mg), puts 50mL In measuring bottle, add methanol ultrasound to dissolve Febuxostat and be diluted to scale, shake up, filter, take subsequent filtrate 5mL, put 25mL measuring bottles In, add methanol dilution to be shaken up, as test solution to scale.Another precision weighs Febuxostat reference substance 10mg and puts 50mL amounts In bottle, add methanol appropriate, ultrasound makes dissolving, adds methanol to scale, and the accurate 5mL that measures is put in 25mL measuring bottles respectively, adds methanol dilute Release to scale, shake up, as reference substance solution.Precision measures above-mentioned reference substance solution and each 10 μ L of test solution are injected separately into Liquid chromatograph, records chromatogram, and result of calculation is shown in Table 23.
23 assay result of table
Lot number 080909 081007 081008 081009
Labelled amount content (%) 100.5 100.0 100.2 100.1
5th, stability testing method and result
According to《Chinese Pharmacopoeia》Version two-shift system agent medicine stability in 2010 requires to investigate the stability of febuxostat tablet.
1st, accelerated test:(sample lot number:081007、081008、081009)
Take this preparation, respectively simulation listing packaging, be placed in 40 DEG C ± 2 DEG C, humidity placed for 75% ± 5% time, in 0,1, 2nd, sample within 3,6 months, detection.It the results are shown in Table 24.
24 accelerated test result of table
5.2 long term test:(sample lot number:081007、081008、081009)
Take this preparation, respectively simulation listing packaging, be placed in 25 DEG C ± 2 DEG C, relative humidity preserved for 60% ± 10%, in 0, 3rd, sample within 6,12,18 months, detection.It the results are shown in Table 25.
25 long-term test results of table
6th, conclusion and evaluation
Stability test has been carried out to this preparation according to chemicals stability study technological guidance principle.(1) to trial-production Sample carries out the experiment of the influence factors such as illumination, high temperature, high humidity, the results showed that:Every inspection target meets and faces without significant change Bed uses sample quality draft standard;(2) three batches of samples accelerated test 6 months (40 DEG C, RH 75% under simulation listing packaging Under part), for this preparation after above-mentioned condition accelerated test 6 months, every inspection target meets clinic sample without significant change Quality standard draft;(3) three batches of sample simulation listing packagings, under conditions of 25 DEG C ± 2 DEG C, relative humidity 60% ± 10%, After keeping sample investigate 6 months for a long time, every inspection target meets clinic sample quality draft standard, length without significant change Phase, which keeps sample to investigate to test, still to carry out.
Compared with prior art, the present invention improves the prescription and preparation process of febuxostat tablet, is to prepare Process stabilizing, feasible, the Febuxostat tablet quality of preparation is well stablized, and makes the effect of it is to diseases such as hyperuricemia and gouts It is more notable;Examined moreover, the present invention establishes system, complete, effective quality for improved febuxostat tablet Survey method, the specificity of the method is strong, precision is high, favorable reproducibility, the rate of recovery are high, measurement result is accurate, has reached effective Control drug quality purpose, ensure that product quality stabilization and clinical application safely, effectively.Packaging material selects Select proper, long-term to place sample stability good.
Brief description of the drawings
Fig. 1 is the Moisture percentage curve map of medicinal powder under different relative humidity;
Fig. 2 is two kinds of crystal form difference dissolution medium comparative graphs;
Fig. 3 is febuxostat tablet dissolution rate linear relationship working curve diagram.
Embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment 1:The febuxostat tablet is handed over by 80g Febuxostats, 110g microcrystalline celluloses, 40g lactose, 18g Join made of sodium carboxymethylcellulose and 2g magnesium stearates.Febuxostat, lactose are taken, crosses 80 mesh sieve nets respectively, it is spare;By 80g Febuxostat is uniformly mixed with 110g microcrystalline celluloses, 40g lactose, 8g Ac-Di-Sols, adds appropriate purified water Softwood processed, the granulation of 18 mesh sieve nets, 70 DEG C of dryings, 18 mesh sieve whole grains, add surplus cross-linked carboxymethyl fiber sodium and 2g stearic acid Magnesium, is uniformly mixed;Intermediate detects, and tabletting after qualification, obtains plain piece;370g ethanol, 100g purified waters is taken to be placed in blender, In the case of being stirred continuously add 30g premix coating powder, continue stirring 1 it is small when, coating solution is filtered with 100 mesh sieve nets, spare;Will Plain piece is placed in coating pan, is opened coating pan and is simultaneously started air draft and dust exhaust apparatus, while with 40 DEG C~45 DEG C hot-air pre-heatings, makes element Piece is heated evenly, and sops up the fine powder being adsorbed in plain piece;Coating pan is started, regulates coating solution granularity of spray and spraying speed Spend, on the label that prepared Coating Solution is equably sparged to rotation;After coating, continue to be divided with cold air drying 10 Clock, coating weight gain 3%-5%;Mixing with tabletting filling process, ambient humidity is controlled below 50%.
Embodiment 2:The febuxostat tablet is handed over by 120g Febuxostats, 165g microcrystalline celluloses, 60g lactose, 27g Join made of sodium carboxymethylcellulose and 3g magnesium stearates.Febuxostat, lactose are taken, crosses 80 mesh sieve nets respectively, it is spare;By 120g Febuxostat is uniformly mixed with 165g microcrystalline celluloses, 60g lactose, 12g Ac-Di-Sols, adds appropriate purified water Softwood processed, the granulation of 18 mesh sieve nets, 70 DEG C of dryings, 18 mesh sieve whole grains, add surplus cross-linked carboxymethyl fiber sodium and 3g stearic acid Magnesium, is uniformly mixed;Intermediate detects, and tabletting after qualification, obtains plain piece;550g ethanol, 150g purified waters is taken to be placed in blender, In the case of being stirred continuously add 45g premix coating powder, continue stirring 1 it is small when, coating solution is filtered with 100 mesh sieve nets, spare;Will Plain piece is placed in coating pan, is opened coating pan and is simultaneously started air draft and dust exhaust apparatus, while with 40 DEG C~45 DEG C hot-air pre-heatings, makes element Piece is heated evenly, and sops up the fine powder being adsorbed in plain piece;Coating pan is started, regulates coating solution granularity of spray and spraying speed Spend, on the label that prepared Coating Solution is equably sparged to rotation;After coating, continue to be divided with cold air drying 10 Clock, coating weight gain 3%-5%;Mixing with tabletting filling process, ambient humidity is controlled below 50%.
Embodiment 3:The febuxostat tablet is by 40g Febuxostats, 95g microcrystalline celluloses, 20g lactose, 10g crosslinkings Made of sodium carboxymethylcellulose and 1g magnesium stearates.Febuxostat, lactose are taken, crosses 80 mesh sieve nets respectively, it is spare;40g is non- Cloth sotan is uniformly mixed with 95g microcrystalline celluloses, 20g lactose, 4g Ac-Di-Sols, and it is soft to add appropriate purified water system Material, the granulation of 18 mesh sieve nets, 70 DEG C of dryings, 18 mesh sieve whole grains, add surplus cross-linked carboxymethyl fiber sodium and 1g magnesium stearates, mix Close uniform;Intermediate detects, and tabletting after qualification, obtains plain piece;Take 185g ethanol, 50g purified waters to be placed in blender, constantly stirring In the case of mixing add 15g premix coating powder, continue stirring 1 it is small when, coating solution is filtered with 100 mesh sieve nets, spare;Plain piece is put In in coating pan, open coating pan and simultaneously start air draft and dust exhaust apparatus, while with 40 DEG C~45 DEG C hot-air pre-heatings, plain piece is heated Uniformly, and the fine powder being adsorbed in plain piece is sopped up;Coating pan is started, regulates coating solution granularity of spray and spray velocity, will be matched somebody with somebody The Coating Solution made is equably sparged on the label of rotation;After coating, continue to use cold air drying 10 minutes, coating increases Weight 3%-5%;Mixing with tabletting filling process, ambient humidity is controlled below 50%.
Embodiment 4:The complete detection method of febuxostat tablet of the present invention is:
(1) character:This preparation is Film coated tablets, after removing coating, whitening color or off-white color;
(2) assay:
Chromatographic condition and system suitability:It is filler with octadecylsilane chemically bonded silica;Mobile phase is first Alcohol-with triethylamine tune pH be 5.0 0.3% acetic acid=70:30, detected using UV, Detection wavelength 317nm, flow velocity is 1.0mL/min;Number of theoretical plate is calculated by Febuxostat peak, should be not less than 2000;
Determination method:20, this preparation is taken, accurately weighed, finely ground, precision weighs the fine powder equivalent to Febuxostat 10mg, puts In 50mL measuring bottles, add methanol ultrasound to dissolve Febuxostat and be diluted to scale, shake up, filter, take subsequent filtrate 5mL, put 25mL In measuring bottle, methanol dilution is added to be shaken up, as test solution to scale;Another precision weighs Febuxostat reference substance 10mg and puts In 50mL measuring bottles, add methanol appropriate, ultrasound makes dissolving, adds methanol to scale, and the accurate 5mL that measures is put in 25mL measuring bottles respectively, is added Methanol dilution shakes up, as reference substance solution to scale;Precision measures above-mentioned reference substance solution and each 10 μ L of test solution, Liquid chromatograph is injected separately into, records chromatogram;
(3) differentiate:
(1) liquid phase differentiates:Under assay item, the retention time of the retention time of test sample main peak with reference substance peak Unanimously;
(2) ultraviolet discriminating:This preparation fine powder equivalent to Febuxostat 6mg is taken, is put in 100mL measuring bottles, adds methanol ultrasonic Dissolve Febuxostat and be diluted to scale, shake up, filter, take subsequent filtrate 5mL, put in 50mL measuring bottles, add methanol dilution to quarter Degree, shakes up, reference《Chinese Pharmacopoeia》The UV-VIS spectrophotometry of two IV A of annex of version in 2010 is measured, There is absorption maximum at the wavelength of 215nm and 315nm;
(4) check:
(1) dissolution rate:Concrete operations are as follows:Take this preparation, reference《Chinese Pharmacopoeia》Two Ⅹ C of annex of version in 2010 The dissolution method of two methods, using the 1000mL phosphate buffers of pH=6.8 as dissolution medium, rotating speed is 50 turns per minute, Operate in accordance with the law, and 10mL was sampled in 30 minutes, filtration, takes subsequent filtrate 2mL, put in 25mL measuring bottles, and solubilization goes out medium to quarter Degree, shakes up, as test solution;Another precision weighs Febuxostat reference substance 16mg, puts in 50mL measuring bottles, adds methanol dissolving simultaneously Scale is diluted to, is shaken up, then precision pipettes 2mL and puts in 100mL measuring bottles, solubilization goes out medium to scale, shakes up, as control Product solution;Reference《Chinese Pharmacopoeia》The spectrophotometry of the two record IV A of version in 2010, measures trap at 317nm wavelength; Calculate the stripping quantity of every;
(2) related material:
Chromatographic condition and system suitability:It is filler with octadecylsilane chemically bonded silica;Mobile phase is first Alcohol-with triethylamine tune pH be 5.0 0.3% acetic acid=70:30, detected using UV, Detection wavelength 317nm, flow velocity is 1.0mL/min;Number of theoretical plate is calculated by Febuxostat peak, should be not less than 2000;
Determination method:This preparation piece powder equivalent to the 10mg containing Febuxostat is taken, puts in 50mL measuring bottles, adds methanol appropriate, is surpassed Sound makes dissolving, lets cool, and adds methanol dilution to shake up to scale, filter, take subsequent filtrate as test solution;Precision pipettes again Test solution 1mL is stated, with methanol dilution into 1% own control product solution;Another precision weighs impurity A reference substance 10mg, uses first The amount that alcohol is diluted to the impure A of every 1mL is 2 μ g, as reference substance solution, takes each 10 μ of above-mentioned test solution, reference substance solution L injecting chromatographs, record chromatogram;In test solution chromatogram, if any impurity A peak, calculated, should be not greater than with external standard method 1%;In addition to solvent peak and auxiliary material peak, the sum of peak area of other impurities should be not more than 1 times of own control peak area;
(3) microbial limit:Take this preparation, reference《Chinese Pharmacopoeia》The method of two Ⅺ J of annex in 2010 calculates;
(4) weight differential:This preparation is taken, it is accurately weighed, average piece weight, then weight every accurately weighed respectively are calculated, It should meet《Chinese Pharmacopoeia》The regulation of two I A of annex of version in 2010.

Claims (1)

1. the detection method of febuxostat tablet, it is characterised in that:The detection method includes character, discriminating, inspection and content Measure project;Wherein differentiate it is that the Febuxostat in preparation is differentiated;Inspection be this preparation is carried out respectively related material, Dissolution rate, microbial limit and weight differential are checked;Assay is that Febuxostat is measured;The detection side Method includes:
(1) character:This preparation is Film coated tablets, after removing coating, whitening color or off-white color;
(2) assay:
Chromatographic condition and system suitability:It is filler with octadecylsilane chemically bonded silica;Mobile phase is methanol-use Triethylamine tune pH is 5.0 0.3% acetic acid=70:30, detected using UV, Detection wavelength 317nm, flow velocity 1.0mL/min; Number of theoretical plate is calculated by Febuxostat peak, should be not less than 2000;
Determination method:20, this preparation is taken, accurately weighed, finely ground, precision weighs the fine powder equivalent to Febuxostat 10mg, puts 50mL In measuring bottle, add methanol ultrasound to dissolve Febuxostat and be diluted to scale, shake up, filter, take subsequent filtrate 5mL, put 25mL measuring bottles In, add methanol dilution to be shaken up, as test solution to scale;Another precision weighs Febuxostat reference substance 10mg and puts 50mL amounts In bottle, add methanol appropriate, ultrasound makes dissolving, adds methanol to scale, and the accurate 5mL that measures is put in 25mL measuring bottles respectively, adds methanol dilute Release to scale, shake up, as reference substance solution;Precision measures above-mentioned reference substance solution and each 10 μ L of test solution, notes respectively Enter liquid chromatograph, record chromatogram;
(3) differentiate:
(1) liquid phase differentiates:Under assay item, the retention time one of the retention time of test sample main peak with reference substance peak Cause;
(2) ultraviolet discriminating:This preparation fine powder equivalent to Febuxostat 6mg is taken, is put in 100mL measuring bottles, adds methanol ultrasound to make non- Cloth sotan dissolves and is diluted to scale, shakes up, and filtration, takes subsequent filtrate 5mL, put in 50mL measuring bottles, add methanol dilution to be shaken to scale It is even, reference《Chinese Pharmacopoeia》The UV-VIS spectrophotometry of two IV A of annex of version in 2010 is measured, 215nm with There is absorption maximum at the wavelength of 315nm;
(4) check:
(1) dissolution rate:Concrete operations are as follows:Take this preparation, reference《Chinese Pharmacopoeia》Two annex of version in 2010, Ⅹ the second methods of C Dissolution method, using the 1000mL phosphate buffers of pH=6.8 as dissolution medium, rotating speed is 50 turns per minute, is grasped in accordance with the law Make, and 10mL was sampled in 30 minutes, filtration, takes subsequent filtrate 2mL, put in 25mL measuring bottles, solubilization goes out medium to scale, shakes It is even, as test solution;Another precision weighs Febuxostat reference substance 16mg, puts in 50mL measuring bottles, adds methanol to dissolve and dilute To scale, shake up, then precision pipettes 2mL and puts in 100mL measuring bottles, solubilization goes out medium to scale, shakes up, molten as reference substance Liquid;Reference《Chinese Pharmacopoeia》The spectrophotometry of the two record IV A of version in 2010, measures trap at 317nm wavelength;Calculate Go out the stripping quantity of every;
(2) related material:
Chromatographic condition and system suitability:It is filler with octadecylsilane chemically bonded silica;Mobile phase is methanol-use Triethylamine tune pH is 5.0 0.3% acetic acid=70:30, detected using UV, Detection wavelength 317nm, flow velocity 1.0mL/min; Number of theoretical plate is calculated by Febuxostat peak, should be not less than 2000;
Determination method:This preparation piece powder equivalent to the 10mg containing Febuxostat is taken, puts in 50mL measuring bottles, adds methanol appropriate, ultrasound makes Dissolving, lets cool, and adds methanol dilution to shake up to scale, filter, take subsequent filtrate as test solution;Precision pipettes above-mentioned confession again Test sample solution 1mL, with methanol dilution into 1% own control product solution;Another precision weighs impurity A reference substance 10mg, dilute with methanol The amount for being interpreted into the impure A of every 1mL is 2 μ g, as reference substance solution, takes each 10 μ L notes of above-mentioned test solution, reference substance solution Enter chromatograph, record chromatogram;In test solution chromatogram, if any impurity A peak, calculated, should be not greater than with external standard method 1%;In addition to solvent peak and auxiliary material peak, the sum of peak area of other impurities should be not more than 1 times of own control peak area;Wherein, Impurity A is Febuxostat hydrolysate in ZL201210545350.7;
(3) microbial limit:Take this preparation, reference《Chinese Pharmacopoeia》The method of two Ⅺ J of annex in 2010 calculates;
(4) weight differential:This preparation is taken, it is accurately weighed, average piece weight, then weight every accurately weighed respectively are calculated, should be accorded with Close《Chinese Pharmacopoeia》The regulation of two I A of annex of version in 2010.
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