CN105891392A - Method for separating and measuring lurasidone hydrochloride intermediate related substances through liquid chromatography - Google Patents

Method for separating and measuring lurasidone hydrochloride intermediate related substances through liquid chromatography Download PDF

Info

Publication number
CN105891392A
CN105891392A CN201610187445.4A CN201610187445A CN105891392A CN 105891392 A CN105891392 A CN 105891392A CN 201610187445 A CN201610187445 A CN 201610187445A CN 105891392 A CN105891392 A CN 105891392A
Authority
CN
China
Prior art keywords
mobile phase
separating
lurasidone
related substance
lurasidone hcl
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610187445.4A
Other languages
Chinese (zh)
Inventor
贾少华
刘秋叶
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Wanquan Dezhong Medical Biological Technology Co Ltd
Original Assignee
Beijing Wanquan Dezhong Medical Biological Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Beijing Wanquan Dezhong Medical Biological Technology Co Ltd filed Critical Beijing Wanquan Dezhong Medical Biological Technology Co Ltd
Priority to CN201610187445.4A priority Critical patent/CN105891392A/en
Publication of CN105891392A publication Critical patent/CN105891392A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • 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
    • G01N30/60Construction of the column
    • GPHYSICS
    • 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
    • G01N30/04Preparation or injection of sample to be analysed
    • G01N30/06Preparation
    • GPHYSICS
    • 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
    • G01N30/62Detectors specially adapted therefor
    • G01N30/74Optical detectors

Abstract

The invention belongs to the field of analytical chemistry and discloses a method for separating and detecting lurasidone hydrochloride intermediate 3-(1-piperazinyl)-1,2-benzisothiazole and related substances through liquid chromatography. According to the method, octyl silane bonded silica gel serves as a chromatographic column of filler, ion-pairing reagent-buffer salt solution-organic phase in a certain proportion serves as a mobile phase, and the content of the lurasidone hydrochloride intermediate and the related substances of the intermediate can be measured, so that purity of reactants in the production process of lurasidone hydrochloride is effectively controlled, side reactions and impurities are reduced, the yield of the product is increased, and the quality of the product is improved. The method is high in specificity, high in accuracy and easy and convenient to operate.

Description

A kind of method of liquid chromatography for separating and determining Lurasidone HCl intermediate related substance
Technical field
The invention belongs to analytical chemistry field, be specifically related to the method for liquid chromatography for separating and determining Lurasidone HCl intermediate and related substance thereof.
Background technology
Lurasidone HCl is a kind of atypical antipsychotic, clinically for schizoid treatment, cognitive function can be improved. Lurasidone HCl chemistry (3aR, 4S, 7R by name, 7aS)-2-(1R, 2R)-2-4-(1,2-benzisothiazole-3-yl) and piperazine-1-methylene ] cyclohexyl methyl } hexahydro-4,7-endo-methylene group-2H-iso-indoles-1,3-dione hydrochloride, molecular formula is C28H36N4O2SHCl. Lurasidone HCl intermediated chemistry is called 3-(1-piperazinyl)-1,2-benzisothiazole, and molecular formula is C11H13N3S, structural formula is:
In the process of synthetic hydrochloric acid Lurasidone, the purity of some important intermediate need to be controlled, to reduce the generation of side reaction and the generation of impurity, thus improve product yield and purity. For Lurasidone HCl intermediate 3-(1-piperazinyl)-1,2-benzisothiazole, need the related substance controlling to have 2, namely 1,2-benzisothiazole-3-ketone (related substance 1), structural formula is:
The chloro-1H-iso-indoles of 3-(related substance 2), structural formula is:
Impurity removal in Lurasidone HCl intermediate is incomplete, the generation of side reaction and the generation of impurity will be caused, thus affect pharmaceutical purity and quality. Therefore, realize separation determination Lurasidone HCl intermediate and related substance thereof, the purity of in synthetic hydrochloric acid Lurasidone process reactant can be ensured, improve product yield and quality, have important practical significance at production and the quality control aspect thereof of Lurasidone HCl.
Summary of the invention
The object of the present invention is to provide a kind of Lurasidone HCl intermediate 3-(1-piperazinyl)-1 that analyzes, the chemical purity of 2-benzisothiazole and the method for separated its related substance, thus realize the separated island form of Lurasidone HCl intermediate and its related substance, to ensure the purity of Lurasidone HCl intermediate, reduce the generation of side reaction, thus effectively control the quality of Lurasidone HCl finished product.
Of the present invention a kind of measure Lurasidone HCl intermediate and related substance thereof method, be to adopt the chromatographic column that octyl silane group silica gel is filler, taking a certain proportion of ion-pairing agent-buffer salt solution-organic phase as mobile phase;
Above-mentioned said chromatographic column, taking octyl silane group silica gel as filler, is selected from the chromatographic column of the brands such as Phenomenex, Kromasil and Apollo.
Above-mentioned said organic phase is selected from one or more in methyl alcohol, acetonitrile, isopropyl alcohol or oxolane.
Above-mentioned said buffer salt can be phosphate, formates, acetate, perchlorate, preferably phosphate.
Above-mentioned said ion-pairing agent can be sodium heptanesulfonate, perfluorooctane sulfonate, lauryl sodium sulfate, dodecyl sodium sulfonate etc., preferably sodium heptanesulfonate.
Method of separating and assaying of the present invention, can realize in accordance with the following methods:
1) get Lurasidone HCl intermediate and related substance sample thereof appropriate, by methyl alcohol or mobile phase sample dissolution, be mixed with the sample solution of the hydrochloric Lurasidone of every 1 mL and related substance 0.1 ~ 1.5 mg thereof respectively;
2) it is 0.5 ~ 1.5 mL/min that flow rate of mobile phase is set, determined wavelength 205 ~ 280 nm;
3) mobile phase A is 5 ~ 25 mmol/L potassium dihydrogen phosphate and heptane sulfonic acid sodium salt, and pH is 4.0 ~ 7.0; Mobile phase B is acetonitrile.
4) get 1) sample solution 10 ~ 50 μ L injection liquid chromatography, complete the separation determination of Lurasidone HCl intermediate and related substance thereof. Wherein:
The model of high performance liquid chromatograph, has no special requirements, and the chromatograph that the present invention adopts is Shimadzu high performance liquid chromatograph:
LC-20AT,CBM-20A,SIL-20AC,SPD-M20A,CTO-10ASvp
Chromatographic column: C8(Phenomenex, 250 × 4.6 mm, 5 μm)
Mobile phase: A:20 mmol/L potassium dihydrogen phosphate and 10 mmol/L heptane sulfonic acid sodium salt (pH 6.0)
B: acetonitrile
Flow velocity: 1.0 mL/min
Determined wavelength: 230 nm
Sampling volume: 10 μ L
Gradient:
Time (min) Mobile phase A Mobile phase B
0 70 30
12 70 30
17 58 42
27 40 60
32 70 30
50 70 30
The present invention adopts C8(Phenomenex, 250 × 4.6 mm, 5 μm) chromatographic column, effectively separation determination Lurasidone HCl intermediate and related substance thereof. The invention solves the separation determination problem of Lurasidone HCl intermediate and related substance thereof, ensure that the purity of intermediate in Lurasidone HCl production process, decrease the generation of side reaction, achieve the quality controllable of Lurasidone HCl.
Accompanying drawing explanation
The liquid chromatogram of blank solvent when Fig. 1 is embodiment 1;
Lurasidone HCl intermediate and related substance liquid chromatogram thereof when Fig. 2 is embodiment 1;
Lurasidone HCl intermediate liquid chromatogram when Fig. 3 is embodiment 1;
Lurasidone HCl intermediate and related substance liquid chromatogram thereof when Fig. 4 is embodiment 2. .
Detailed description of the invention:
Following examples for understanding the present invention further, but are not limited to the scope of this enforcement. Below by way of example forms, the Lurasidone HCl intermediate the present invention relates to and related substance detection method thereof are described in further detail, but this should be interpreted as that the scope of the above-mentioned theme of the present invention only limits to following instance, all technology realizing based on content of the present invention all belong to scope of the present invention.
Embodiment 1
Instrument and condition
High performance liquid chromatograph: Shimadzu: LC-20AT, CBM-20A, SIL-20AC, SPD-M20A, CTO-10ASvp
Chromatographic column: C8(Phenomenex, 250 × 4.6 mm, 5 μm)
Mobile phase: A:20 mmol/L potassium dihydrogen phosphate and 10 mmol/L heptane sulfonic acid sodium salt (pH 6.0)
B: acetonitrile
Flow velocity: 1.0 mL/min
Determined wavelength: 230 nm
Sampling volume: 10 μ L
Gradient:
Time (min) Mobile phase A Mobile phase B
0 70 30
12 70 30
17 58 42
27 40 60
32 70 30
50 70 30
Experimental procedure
Get Lurasidone HCl intermediate and related substance thereof appropriate, dissolve with methyl alcohol, be mixed with the solution of the hydrochloric Lurasidone intermediate of every 1 mL and each 0.5 mg of related substance thereof. Get above-mentioned Lurasidone HCl intermediate and related substance solution thereof appropriate, be mixed with system suitability solution; Separately get methyl alcohol as blank solution. Record chromatogram is analyzed by above-mentioned chromatographic condition. The results are shown in accompanying drawing 1 ~ 3, Fig. 1 is blank solvent chromatogram; In Fig. 2, the chromatographic peak of retention time 11.767 min is Lurasidone HCl intermediate, and all the other chromatographic peaks are the related substance of Lurasidone HCl intermediate. In Fig. 3, the chromatographic peak of retention time 11.750 min is Lurasidone HCl intermediate. Fig. 1 ~ Fig. 3 shows: method of the present invention can be effectively separated with its related substance by Lurasidone HCl intermediate, and can accurately quantitatively detect, to calculate the purity of Lurasidone HCl intermediate.
Embodiment 2
Instrument and condition
High performance liquid chromatograph: Shimadzu: LC-20AT, CBM-20A, SIL-20AC, SPD-M20A, CTO-10ASvp
Chromatographic column: C8(Phenomenex, 250 × 4.6 mm, 5 μm)
Mobile phase: A:20 mmol/L potassium dihydrogen phosphate and 10 mmol/L heptane sulfonic acid sodium salt (pH 6.0)
B: acetonitrile
Flow velocity: 1.0 mL/min
Determined wavelength: 230 nm
Sampling volume: 10 μ L
Gradient:
Time (min) Mobile phase A Mobile phase B
0 70 30
12 70 30
17 58 42
30 45 55
40 70 30
50 70 30
Experimental procedure
Get Lurasidone HCl intermediate and related substance thereof appropriate, dissolve with methyl alcohol, be mixed with the solution of the hydrochloric Lurasidone intermediate of every 1 mL and each 0.5 mg of related substance thereof. Get above-mentioned Lurasidone HCl intermediate and related substance solution thereof appropriate, be mixed with system suitability solution; Record chromatogram is analyzed by above-mentioned chromatographic condition. The results are shown in accompanying drawing 4, in Fig. 4, the chromatographic peak of retention time 11.764 min is Lurasidone HCl intermediate, and all the other chromatographic peaks are the related substance of Lurasidone HCl intermediate.
The present invention verifies the following items of described Lurasidone HCl intermediate and Related substance method thereof:
System suitability experiment
Get Lurasidone HCl intermediate and related substance thereof appropriate, dissolve with methyl alcohol respectively, be mixed with the test liquid of hydrochloric Lurasidone intermediate and related substance thereof. Liquid-phase chromatographic analysis is carried out, record chromatogram by the chromatographic condition of embodiment 1. As seen from Figure 2, between related substance and main peak, separating degree meets the requirements with this understanding;
Sample introduction replica test
By Lurasidone HCl intermediate test liquid, by the chromatographic condition of embodiment 1, repeat sample introduction 6 times, the repeatability of investigation method. Can be added by result, the method sample introduction repeatability is good;
Stability of solution
Get the test liquid of Lurasidone HCl intermediate and related substance thereof, press the chromatographic condition of embodiment 1, respectively at sample introduction after 0,2,4,6,8,12,16,20,24 hour, stability of solution when investigating this product quantitative assay, from result, this sample solution is stable in 24 hours.
Time (h) Lurasidone HCl intermediate peak (A)
0 22729162
2 22755680
4 22823405
6 22833111
8 22847659
12 22871632
16 22911547
20 23001278
24 23052867
Mean value 22869593
RSD% 0.46
Durability
For the stability of further verification method, chromatographic column brand, flow velocity, column temperature, these conditions of pH value of buffer solution are finely tuned by accordingly, to investigate the durability of chromatographic condition;
Result shows, this method chromatographic column brand good tolerance, and change in flow is within the scope of ± 0.1ml/min, and chromatogram peak-to-peak type does not change, only retention time have corresponding reach and after move. Column temperature changes ± 5 DEG C, pH of buffer variation ± 0.2 scope is interior also changes without obvious appearance time. Above-mentioned investigation shows this method good tolerance.

Claims (10)

1. a liquid chromatography separated detect Lurasidone HCl intermediate and related substance thereof method, it is characterized in that: adopt reversed-phased high performace liquid chromatographic, taking octyl silane group silica gel as the chromatographic column of filler, taking certain proportion ion-pairing agent-buffer salt solution-organic phase as mobile phase.
2. method of separating and assaying according to claim 1, chromatographic column is selected from the brands such as Phenomenex, Kromasil and Apollo.
3. method of separating and assaying according to claim 1, said organic phase is selected from one or more in methyl alcohol, acetonitrile, isopropyl alcohol and oxolane.
4. method of separating and assaying according to claim 1, said buffer salt can be phosphate, formates, acetate, perchlorate.
5. method of separating and assaying according to claim 1, said ion-pairing agent can be sodium heptanesulfonate, perfluorooctane sulfonate, lauryl sodium sulfate, dodecyl sodium sulfate.
6. method of separating and assaying according to claim 1, said ion-pairing agent-buffer salt solution pH is 4.0 ~ 7.0.
7. method of separating and assaying according to claim 4, said buffer salt preferably phosphate.
8. method of separating and assaying according to claim 1, is characterized in that:
1) get Lurasidone HCl intermediate and related substance sample thereof appropriate, by methyl alcohol or mobile phase sample dissolution, be mixed with the sample solution of the hydrochloric Lurasidone of every 1 mL and related substance 0.1 ~ 1.5 mg thereof respectively;
2) it is 0.5 ~ 1.5 mL/min that flow rate of mobile phase is set, determined wavelength 205 ~ 280 nm;
3) mobile phase A is 5 ~ 25 mmol/L potassium dihydrogen phosphate and heptane sulfonic acid sodium salt, and pH is 4.0 ~ 7.0; Mobile phase B is acetonitrile; The gradient of mobile phase arranges as follows:
Time (min) Mobile phase A Mobile phase B 0 70 30 12 70 30 17 58 42 27 40 60 32 70 30 50 70 30
4) get 1) sample solution 10 ~ 50 μ L injection liquid chromatography, complete the separation determination of Lurasidone HCl intermediate and related substance thereof.
9. the method for mensuration Lurasidone HCl intermediated chemistry purity according to claim 8, is characterized in that: mobile phase A is 20 mmol/L potassium dihydrogen phosphates and 10 mmol/L heptane sulfonic acid sodium salt, with pH be 6.0; Mobile phase B is acetonitrile.
10. the new method of mensuration Lurasidone HCl intermediated chemistry purity according to claim 8, is characterized in that: chromatographic column is C8,5 μm, 250 × 4.6 mm(I.D.), flow velocity is 1.0 mL/min, and determined wavelength is 230 nm, under room temperature condition, can detect.
CN201610187445.4A 2016-03-29 2016-03-29 Method for separating and measuring lurasidone hydrochloride intermediate related substances through liquid chromatography Pending CN105891392A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610187445.4A CN105891392A (en) 2016-03-29 2016-03-29 Method for separating and measuring lurasidone hydrochloride intermediate related substances through liquid chromatography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610187445.4A CN105891392A (en) 2016-03-29 2016-03-29 Method for separating and measuring lurasidone hydrochloride intermediate related substances through liquid chromatography

Publications (1)

Publication Number Publication Date
CN105891392A true CN105891392A (en) 2016-08-24

Family

ID=57013922

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201610187445.4A Pending CN105891392A (en) 2016-03-29 2016-03-29 Method for separating and measuring lurasidone hydrochloride intermediate related substances through liquid chromatography

Country Status (1)

Country Link
CN (1) CN105891392A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106525996A (en) * 2016-09-21 2017-03-22 北京万全德众医药生物技术有限公司 Method for separating and measuring relevant substance of lurasidone hydrochloride intermediate by using gas chromatographic technique
CN107064323A (en) * 2016-12-05 2017-08-18 北京万全德众医药生物技术有限公司 A kind of use liquid chromatography for separating and determining Lurasidone HCl and its method about material
CN112305096A (en) * 2020-09-30 2021-02-02 辰欣药业股份有限公司 Detection method of related substances of lurasidone hydrochloride tablets
CN113009042A (en) * 2021-03-16 2021-06-22 海南鑫开源医药科技有限公司 Analysis and detection method of 3- (1-piperazinyl) -1, 2-benzisothiazole hydrochloride and related substances thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1201457A (en) * 1995-11-07 1998-12-09 辉瑞大药厂 Process and intermediates for preparing 30(1-piperazinyl)-1,2-benzisothiazole
CN103207246A (en) * 2012-12-21 2013-07-17 北京万全德众医药生物技术有限公司 Method of separating and determining lurasidone and optical isomers thereof by using liquid chromatography
WO2013190455A2 (en) * 2012-06-18 2013-12-27 Shasun Pharmaceuticals Limited Process for the preparation of lurasidone hydrochloride
CN104860899A (en) * 2014-02-24 2015-08-26 连云港恒运医药科技有限公司 Lurasidone, or related substances of salt of lurasidone, and preparation method of lurasidone and related substances

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1201457A (en) * 1995-11-07 1998-12-09 辉瑞大药厂 Process and intermediates for preparing 30(1-piperazinyl)-1,2-benzisothiazole
WO2013190455A2 (en) * 2012-06-18 2013-12-27 Shasun Pharmaceuticals Limited Process for the preparation of lurasidone hydrochloride
CN103207246A (en) * 2012-12-21 2013-07-17 北京万全德众医药生物技术有限公司 Method of separating and determining lurasidone and optical isomers thereof by using liquid chromatography
CN104860899A (en) * 2014-02-24 2015-08-26 连云港恒运医药科技有限公司 Lurasidone, or related substances of salt of lurasidone, and preparation method of lurasidone and related substances

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
DANIEL ZAKOWIECKI ET AL.: "DEVELOPMENT OF RAPID AND ROBUST STABILITY-INDICATING METHOD FOR ANALYSIS OF ZIPRASIDONE (HYDROCHLORIDE AND FREEBASE) AS DRUG SUBSTANCE AND IN MEDICINES BY UPLC", 《ACTA POLONIAE PHARMACEUTICA》 *
KATARINA NIKOLIC ET AL.: "The Chemometric Study and Quantitative Structure Retention Relationship Modeling of Liquid Chromatography Separation of Ziprasidone Components", 《COMBINATORIAL CHEMISTRY & HIGH THROUGHPUT SCREENING》 *
崔春利: "《中药制剂分析实验指导》", 30 September 2014, 陕西科学技术出版社 *
张园园 等: "反相高效液相色谱法测定盐酸鲁拉西酮有关物质", 《医药导报》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106525996A (en) * 2016-09-21 2017-03-22 北京万全德众医药生物技术有限公司 Method for separating and measuring relevant substance of lurasidone hydrochloride intermediate by using gas chromatographic technique
CN107064323A (en) * 2016-12-05 2017-08-18 北京万全德众医药生物技术有限公司 A kind of use liquid chromatography for separating and determining Lurasidone HCl and its method about material
CN112305096A (en) * 2020-09-30 2021-02-02 辰欣药业股份有限公司 Detection method of related substances of lurasidone hydrochloride tablets
CN113009042A (en) * 2021-03-16 2021-06-22 海南鑫开源医药科技有限公司 Analysis and detection method of 3- (1-piperazinyl) -1, 2-benzisothiazole hydrochloride and related substances thereof

Similar Documents

Publication Publication Date Title
CN103353491B (en) A method of with liquid chromatography for separating and determining alogliptin benzoate raw material and its preparation
CN105891392A (en) Method for separating and measuring lurasidone hydrochloride intermediate related substances through liquid chromatography
CN104965041B (en) A kind of high-efficiency liquid chromatography method for detecting of Parecoxib Sodium isomer
CN103698436B (en) Method for detecting enantiomer in pramipexole dihydrochloride and method for separating enantiomer from pramipexole dihydrochloride
CN101881756B (en) Method for analyzing and separating Febuxostat and intermediates thereof by high performance liquid chromatography
CN101701942A (en) Method for separating and measuring entecavir and optical isomer thereof by liquid chromatography
CN106525996B (en) Method for separating and measuring related substances of lurasidone hydrochloride intermediate by gas chromatography technology
CN105259282A (en) Method for separating and determining rivaroxaban related substances through liquid chromatography
CN104569269A (en) Method for testing related substances of levocetirizine hydrochloride intermediate
CN109307716B (en) Detection method of brexpiprazole related substance
CN110057959A (en) A kind of analysis method of the high effective liquid chromatography for measuring Febustat intermediate in relation to substance
CN103353492A (en) Method of separating and measuring solifenacin succinate raw material and preparation thereof by using liquid chromatography
CN107271592B (en) Liquid chromatographic purity detection method for completely separating tipiraxib hydrochloride from related impurities
CN103760280A (en) Method for separating and measuring asenapine intermediate related substances by liquid chromatography
CN106680386A (en) Method for separating and testing related substance of carbocisteine raw material medicine and preparation by using liquid chromatography
CN103645151A (en) Method used for rapid detection of spectinomycin content in spectinomycin broth or finished products
CN105467028A (en) A method of separating and measuring optical isomers of a lurasidone intermediate by gas chromatography
CN104655786A (en) Method for measuring substances related to formoterol intermediate by separation of liquid chromatography
CN104502466B (en) Method for separating and measuring paliperidone raw material and preparation thereof by liquid chromatography
CN106018617B (en) Method for separating and measuring 2-chloro-1-methylpyridinium iodide content in vilazodone hydrochloride by liquid chromatography
CN107091886A (en) The method of high effective liquid chromatography for measuring Ziprasidone HCl intermediated chemistry purity
CN107219312A (en) A kind of method for detecting Tedizolid Phosphate isomer impurities
CN109212116B (en) Method for separating and measuring chemical purity of bilastine intermediate by high performance liquid chromatography
CN106290622A (en) The detection method of Radix Et Rhizoma Rhei aldehyde in a kind of diacerein raw material finished product
CN112114057A (en) Method for separating and measuring rivaroxaban and related substances thereof by using liquid chromatography

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20160824

WD01 Invention patent application deemed withdrawn after publication