CN111084777A - Piribedil, levodopa and benserazide compound sustained-release three-layer tablet and preparation method thereof - Google Patents

Piribedil, levodopa and benserazide compound sustained-release three-layer tablet and preparation method thereof Download PDF

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CN111084777A
CN111084777A CN202010087042.9A CN202010087042A CN111084777A CN 111084777 A CN111084777 A CN 111084777A CN 202010087042 A CN202010087042 A CN 202010087042A CN 111084777 A CN111084777 A CN 111084777A
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levodopa
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李彩艳
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Shanxi Health Vocational College
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Abstract

The invention discloses a piribedil, levodopa and benserazide compound sustained-release three-layer tablet and a preparation method thereof. The preparation process comprises the steps of wet granulation of the first tablet layer, dry granulation of the second tablet layer and the third tablet layer, tabletting by a three-layer tablet press, coating the sustained-release semipermeable membrane, and coating the rapid-release coating membrane after punching. The invention can prepare the piribedil, levodopa and benserazide compound sustained release preparation, realizes the feasibility of simultaneous administration, can ensure the stability of each active ingredient, and simultaneously ensures the stable release of the active ingredients.

Description

Piribedil, levodopa and benserazide compound sustained-release three-layer tablet and preparation method thereof
Technical Field
The invention belongs to the technical field of medicinal preparations, and particularly relates to a piribedil, levodopa and benserazide compound sustained-release three-layer tablet and a preparation method thereof.
Background
Piribedil is a dopaminergic agonist that stimulates the postsynaptic D2 receptor of the substantia nigra striatum of the brain and the D2 and D3 receptors of the mesolimbic pathway of the brain, providing potent dopamine effects. Clinical pharmacology studies have established the mechanism of action: 1. stimulating dopaminergic cortical angiogenesis in both awake and sleep states. 2. Different clinical functions under dopamine control have been demonstrated by tests on behavioral or psychometric scales. Furthermore, piribedil increases femoral artery blood flow (the presence of dopaminergic receptors in the femoral vascular bed explains the effect of piribedil on the peripheral circulation). For the treatment of parkinson's disease: can be used as single medicine, especially for treating patients with tremor as main symptom. Can also be used in combination with levodopa as an initial or late treatment.
Structural formula (xvi):
Figure BDA0002382427620000011
chemical name: [ (methylenedioxy-3, 4-benzyl) -4-piperazinyl-1 ] -2-pyrimidine
The molecular formula is as follows: c16H18N4O2
Molecular weight: 298.3
The L-dopa absorbed into blood is decarboxylated by about 95% of dopa decarboxylase in peripheral tissues to form catecholamine, which is not easy to pass through a blood brain barrier and causes a lot of adverse reactions, only 1% of L-dopa enters brain circulation and reaches the central nervous system to play a therapeutic role in transforming into the catecholamine, and the L-dopa does not have a remarkable pharmacological effect but indirectly plays a therapeutic role in playing a therapeutic role through the catecholamine.
Structural formula (xvi):
Figure BDA0002382427620000021
chemical name: 3-hydroxy-L-tyrosine.
The molecular formula is as follows: c9H11NO4
Molecular weight: 197.19
Specific optical rotation: -11.7(c ═ 5.3,1N HCl)
Melting point: 295 deg.C
Benserazide hydrochloride is a peripheral decarboxylase inhibitor and is combined with levodopa to prepare a compound preparation of the benserazide hydrochloride. Levodopa is an effective drug for treating Parkinson's disease, and the pharmacological action of levodopa is realized by converting levodopa into dopamine through decarboxylase action in the brain, and the dopamine in the brain can improve Parkinson's disease. However, most of levodopa is converted into dopamine by the action of aromatic Amino Acid Decarboxylase (AADC) in the week of external chemical book, only a small amount of levodopa can enter the brain, and the benserazide hydrochloride used as an AADC inhibitor and the levodopa are used together, so that the levodopa can be inhibited from being converted into dopamine outside the brain, the amount of the levodopa entering the brain is increased, and the symptoms of the Parkinson's disease are effectively improved.
Chemical name: 2-amino-3-hydroxy-N' - (2,3, 4-trihydroxybenzyl) propionylhydrazine hydrochloride
The molecular formula is as follows: c10H16ClN3O5
Molecular weight: 293.7
Melting point: 146 deg.C
Levodopa has been widely used in clinical practice in various countries in the world since 1908 years, and is currently the most effective drug for treating paralysis agitans. Levodopa has therapeutic effect on rigidity, dyskinesia, sialorrhea, and arterial crisis. Although levodopa is a good drug for the treatment of parkinson's disease, many physicians currently choose other drugs such as dopamine receptor agonists as treatment preferences as their best option without dopamine treatment in the first-onset patients due to its diminished efficacy and severe adverse effects. The drug forms a catecholamine intermediate, a dopamine precursor, from tyrosine. About 95% of the L-dopa absorbed into the blood is decarboxylated by dopa decarboxylase in peripheral tissues to form catecholamine, which is not easy to pass through the blood brain barrier and causes many adverse reactions. Only 1% of L-dopa enters the brain circulation and reaches the central nervous system, where it is converted into catecholamine for therapeutic effect. It has no obvious pharmacological action, but indirectly exerts curative effect through catecholamine. DDC inhibitors such as carbidopa, benserazide, etc. are often co-administered in order to reduce the peripheral conversion of levodopa. DDC inhibitors do not readily cross the blood-cerebrospinal fluid barrier by themselves, but increase the amount of levodopa entering the brain by reducing levodopa degradation at the periphery. The poly-barusine hydrazine is a compound preparation of levodopa and benserazide, has higher bioavailability, and is a leading variety in the world anti-Parkinson disease medicine market. Developed by roche swiss, 1973, and approved by the FDA under the trade name Madopar (medoba). Medobo is the main product in the domestic anti-parkinsonian drug market.
The piribedil is used as a dopaminergic agonist, belongs to a relatively important class of medicines in the drug market of anti-Parkinson's disease, is usually used for initial treatment, has a single use curative effect which is not as remarkable as that of levodopa, and is used as an auxiliary therapeutic agent when the curative effect of the levodopa is insufficient so as to reduce the influence of high-dose levodopa on neurons of the levodopa. Therefore, the piribedil is usually combined with the baysizid, and has obvious curative effect on treating the Parkinson's disease.
The existing marketed drugs are piribedil sustained-release tablets and levodopa and benserazide compound preparations such as polydibazazine, and the piribedil, levodopa and benserazide compound preparations which are convenient for patients to take are not available. The applicant finds that the mutual influence of the effective components exists when the piribedil, the levodopa and the benserazide are mixed and stored, the effective components are obviously reduced in the process of medicament storage, the impurity content is obviously increased, and the effective components in the compound preparation are difficult to release in a long-acting manner, so that the invention of the piribedil, the levodopa and the benserazide compound preparation which ensures the long-acting release of the medicament and has stable properties is urgently needed.
Disclosure of Invention
The invention aims to prepare a piribedil, levodopa and benserazide compound preparation. Overcomes the defect that the piribedil, the levodopa and the benserazide influence each other, ensures the long-acting release of the medicament, is convenient for taking the compound preparation, improves the compliance of patients, and provides a preparation method of the compound preparation.
According to the process of the multi-bushizine compound preparation, the piribedil, the levodopa and the benserazide are mixed to prepare the compound preparation, the auxiliary materials and the active ingredients are mutually influenced, impurities exceed the standard, the active ingredients of the medicine are quickly degraded, and the safety and the effectiveness of the medicine can not be ensured.
In order to avoid drug interaction, the invention carries out layered tabletting on the piribedil, the levodopa and the benserazide so as to ensure the stability of the drug. The medicine layering tabletting can avoid the interaction of effective components to a certain extent, but the contact part of the lamellar surface still can generate the interaction, and the long-term stability of the medicine can not be ensured. Therefore, the isolation layer is added between the two layers, so that the stability of each effective component can be effectively isolated, and the isolation layer can be used as a boosting layer to ensure the long-acting release of the medicament. The auxiliary materials selected by the isolation layer are compatible with active ingredients of the piribedil, the levodopa and the benserazide, the stability of the medicament is not influenced, and the isolation layer needs to have water absorbability and expansibility, so that the isolation layer plays a role of a boosting layer after entering a body and ensures long-acting stable release of the medicament. The slow release tablet needs to be perforated on two sides, because the slow release tablet is a three-layer tablet, the middle layer is an isolation boosting layer, the first layer and the third layer are medicine-containing layers, and the effective components of the last layer and the third layer entering the body are respectively released from the upper surface and the lower surface of the tablet so as to achieve the purpose of drug combination.
Specifically, the purpose of the invention is realized by the following scheme:
the invention relates to a three-layer sustained-release tablet which consists of a tablet core, a sustained-release layer and a film coating layer. The slow release layer and the film coating layer are sequentially coated on the surface of the tablet core, the weight of the film coating layer is increased by 1-3%, the weight of the slow release layer is increased to 6-12% of the weight of the tablet core, and the three-layer tablet core is sequentially a first layer, a second layer and a third layer. The active ingredient of the first tablet layer is piribedil, and also comprises pharmaceutic adjuvants such as a filler, a lubricant, a disintegrating agent, a solubilizer, a stabilizer, an adhesive and the like; the second sheet layer is an isolating layer and also serves as a boosting layer for sustained-release, the sheet layer is mainly used for isolating piribedil, levodopa and benserazide, mutual influence between active ingredients and auxiliary materials is avoided, the stability of the medicine is ensured, the main ingredients of the sheet layer are ethyl cellulose, glycerol monooleate, hydroxypropyl methylcellulose, magnesium stearate and red ferric oxide, the mixture absorbs water and expands through the sustained-release layer after entering the body, and the medicine containing layers on two sides are extruded to be dissolved and released; the third layer contains levodopa and benserazide or pharmaceutically acceptable salt thereof as active ingredients, and also contains pharmaceutical adjuvants such as filler, disintegrant, lubricant, etc.
Preferably, the content of the piribedil in the first layer of each tablet is 30-70 mg, and more preferably 50 mg.
Preferably, the levodopa content in the third layer of each tablet is 150-250 mg, and more preferably 200 mg; the content of benserazide or a pharmaceutically acceptable salt thereof is 25 to 80mg, and preferably 50mg in terms of benserazide.
Preferably, each tablet contains piribedil, levodopa, benserazide or a pharmaceutically acceptable salt thereof in a mass ratio of 50: 200: 50, wherein benserazide or a pharmaceutically acceptable salt thereof is calculated as benserazide.
Preferably, the first sheet layer comprises the following components by mass:
Figure BDA0002382427620000041
Figure BDA0002382427620000051
preferably, the second sheet layer comprises the following components by mass:
Figure BDA0002382427620000052
preferably, the third sheet layer comprises the following components by mass:
Figure BDA0002382427620000053
the coating film comprises the following components in percentage by mass:
slow release semipermeable membranes: 28-70 parts of cellulose acetate
2-6 parts of polyethylene glycol
Quick-release coating film: 5-20 parts of gastric soluble coating powder
The preparation method of the tablet comprises the following steps:
(1) uniformly mixing the piribedil bulk drug, the first tablet disintegrating agent, the filler and the stabilizer in a formula ratio in a mixer, adding the prepared binder solution containing the solubilizer, performing wet granulation, drying and finishing wet granules, adding the lubricant, and uniformly mixing to obtain uniformly mixed first tablet granules;
(2) uniformly mixing the second lamellar polyoxyethylene, sodium chloride, red ferric oxide and hydroxypropyl methylcellulose in a formula ratio in a mixer, performing dry granulation, adding magnesium stearate, and uniformly mixing to obtain second lamellar granules;
(3) uniformly mixing the levodopa bulk drug and the benserazide hydrochloride bulk drug with the third-layer disintegrating agent, the filling agent and the adhesive in a formula ratio in a mixer, performing dry granulation, adding the lubricant, and uniformly mixing to obtain third-layer particles;
(4) adding the obtained granules into corresponding slice layer charging hoppers respectively, and pressing into a three-layer slice to obtain a tablet core;
(5) coating a slow-release semipermeable membrane on a tablet core, aging properly, and punching holes on the upper surface and the lower surface of the tablet core by using a laser punching machine;
(6) finally, the coating is coated with a quick-release coating film.
Compared with the prior art, the invention has the following beneficial effects:
the invention aims to prepare a piribedil, levodopa and benserazide compound sustained-release three-layer tablet, provides a new compound for combined administration for treating Parkinson's disease (primary parkinsonism) and postencephalitic, arteriosclerotic or toxic parkinsonism syndrome, conveniently overcomes the defect of mutual influence of piribedil, levodopa and benserazide, and is convenient for patients to administer. The sustained-release preparation can ensure the long-acting release of the drugs and the stability of the drugs, and the tablet still has good stability under the environment with the relative humidity of 75% at 40 ℃ through the test of 6 months.
Detailed Description
The invention will be further illustrated and described with reference to specific embodiments. The technical features of the embodiments of the present invention can be combined correspondingly without mutual conflict.
Example 1:
Figure BDA0002382427620000061
Figure BDA0002382427620000071
the preparation method comprises the following steps:
(1) uniformly mixing the piribedil bulk drug and the first layer of croscarmellose sodium, sucrose and calcium carbonate in a mixer, adding a prepared adhesive solution containing polysorbate 80, performing wet granulation, drying and finishing wet granules, adding colloidal silicon dioxide and magnesium stearate, and uniformly mixing to obtain uniformly mixed first layer granules;
(2) uniformly mixing the second lamellar polyoxyethylene, sodium chloride, red ferric oxide and hydroxypropyl methylcellulose in a formula ratio in a mixer, performing dry granulation, adding magnesium stearate, and uniformly mixing to obtain second lamellar granules;
(3) uniformly mixing levodopa bulk drug and benserazide hydrochloride bulk drug with third-layer lactose, microcrystalline cellulose, cross-linked polyvinylpyrrolidone, hydroxypropyl cellulose and internally-added colloidal silicon dioxide in a mixer, performing dry granulation, adding colloidal silicon dioxide and magnesium stearate, and uniformly mixing to obtain third-layer particles;
(4) adding the obtained granules into corresponding slice layer charging hoppers respectively, and pressing into a three-layer slice to obtain a tablet core;
(5) coating a slow-release semipermeable membrane on a tablet core, aging properly, and punching holes on the upper surface and the lower surface of the tablet core by using a laser punching machine;
(6) finally, the coating is coated with a quick-release coating film.
Comparative example 1:
Figure BDA0002382427620000081
the preparation method comprises
(1) Uniformly mixing the piribedil bulk drug, croscarmellose sodium, sucrose and calcium carbonate in a mixer, adding a prepared adhesive solution containing polysorbate 80, performing wet granulation, and drying and finishing wet granules to obtain dried piribedil drug-containing granules; uniformly mixing levodopa bulk drug and benserazide hydrochloride bulk drug with lactose, microcrystalline cellulose, cross-linked polyvinylpyrrolidone, hydroxypropyl cellulose and internally-added colloidal silicon dioxide in a formula ratio in a mixer, performing dry granulation, adding piribedil-containing granules, colloidal silicon dioxide and magnesium stearate, and uniformly mixing to obtain third-layer granules;
(2) uniformly mixing the second lamellar polyoxyethylene, sodium chloride, red ferric oxide and hydroxypropyl methylcellulose in a formula ratio in a mixer, performing dry granulation, adding magnesium stearate, and uniformly mixing to obtain second lamellar granules;
(3) adding the obtained granules into corresponding slice layer charging hoppers respectively, and pressing into double-layer tablets to obtain tablet cores;
(4) coating a slow-release semipermeable membrane on a tablet core, aging properly, and punching a tablet core medicine-containing layer by using a laser punching machine;
(5) finally, the coating is coated with a quick-release coating film.
Comparative example 2:
Figure BDA0002382427620000091
the preparation method comprises
(1) Uniformly mixing the piribedil bulk drug and the first layer of croscarmellose sodium, sucrose and calcium carbonate in a mixer, adding a prepared adhesive solution containing polysorbate 80, performing wet granulation, drying and finishing wet granules, adding colloidal silicon dioxide and magnesium stearate, and uniformly mixing to obtain uniformly mixed first layer granules;
(2) uniformly mixing the second lamellar polyoxyethylene, sodium chloride, red ferric oxide and hydroxypropyl methylcellulose in a formula ratio in a mixer, performing dry granulation, adding magnesium stearate, and uniformly mixing to obtain second lamellar granules;
(3) adding the obtained granules into corresponding slice layer charging hoppers respectively, and pressing into double-layer tablets to obtain tablet cores;
(4) coating a slow-release semipermeable membrane on a tablet core, aging properly, and punching a tablet core medicine-containing layer by using a laser punching machine;
(5) finally, the coating is coated with a quick-release coating film.
Comparative example 3:
Figure BDA0002382427620000101
the preparation method comprises the following steps:
(1) uniformly mixing levodopa bulk drug and benserazide hydrochloride bulk drug with a first layer of lactose, microcrystalline cellulose, cross-linked polyvinylpyrrolidone, hydroxypropyl cellulose and internally added colloidal silicon dioxide in a mixer, granulating by a dry method, adding colloidal silicon dioxide and magnesium stearate, and uniformly mixing to obtain first layer granules;
(2) uniformly mixing the second lamellar polyoxyethylene, sodium chloride, red ferric oxide and hydroxypropyl methylcellulose in a formula ratio in a mixer, performing dry granulation, adding magnesium stearate, and uniformly mixing to obtain second lamellar granules;
(3) adding the obtained granules into corresponding slice layer charging hoppers respectively, and pressing into double-layer tablets to obtain tablet cores;
(4) coating a slow-release semipermeable membrane on a tablet core, aging properly, and punching a tablet core medicine-containing layer by using a laser punching machine;
(5) finally, the coating is coated with a quick-release coating film.
The comparison of the dissolution curve data of example 1 and comparative examples 1-3 is as follows:
table 1: piribedil dissolution data
Dissolution amount of piribedil% 1h 2h 4h 8h 12h
Example 1 18.96 35.29 58.67 85.66 98.21
Comparative example 1 13.54 25.68 47.03 77.19 97.24
Comparative example 2 19.25 38.72 60.24 89.64 99.57
Table 2: levodopa dissolution data
Dissolution amount of levodopa% 1h 2h 4h 8h 12h
Example 1 15.27 33.58 70.29 91.58 101.53
Comparative example 1 13.54 48.51 86.49 98.51 103.4
Comparative example 3 16.38 35.60 68.33 94.37 99.79
Table 3: benserazide dissolution data
Benserazide dissolution amount% 1h 2h 4h 8h 12h
Example 1 11.58 30.89 60.37 87.55 101.11
Comparative example 1 5.61 16.87 48.31 76.66 99.64
Comparative example 3 13.67 34.56 64.83 89.82 102.04
From the experimental results in the table, the dissolution tendency of the piribedil tablet prepared in the embodiment 1 of the invention is basically consistent with that of the comparative example 2 of the piribedil sustained-release tablet; the dissolution tendency of levodopa and benserazide is basically consistent with that of comparative example 3. In the comparative example 1, the dissolving trends of the piribedil, the levodopa and the benserazide are too slow, the medicine dissolving amount in a specified time cannot be ensured, and the effective treatment effect of the medicine cannot be achieved. In comparative example 1, the difference between tablets is too large, and the RSD exceeds 10 at the first three time points, so that the dissolution of each tablet is not qualified. The results of comparing the accelerated stability data of example 1 with those of comparative examples 1 to 3 are as follows:
table 4: content stability data at 40 ℃ accelerated conditions
Figure BDA0002382427620000121
Table 4: impurity stability data at 40 ℃ accelerated conditions
Figure BDA0002382427620000122
Figure BDA0002382427620000131
From the experimental results in the table above, it can be seen that the tablet prepared in the embodiment 1 of the present invention has good stability under the accelerated test condition at 40 ℃, is basically consistent with the stability of the piribe comparative examples 2-3, and is obviously superior to the compound preparation without the isolation layer in the comparative example 1; the impurity increment of the embodiment 1 is less, is slightly better than that of the comparative examples 2-3, and is obviously better than that of the compound preparation without the isolation layer of the comparative example 1.

Claims (10)

1. The compound sustained-release three-layer tablet containing the piribedil, the levodopa and the benserazide is characterized in that the tablet is an osmotic pump type sustained-release tablet and is divided into a tablet core and a coating film, wherein the tablet core is divided into three layers, namely a first layer containing the active ingredient piribedil, a second layer serving as an isolation layer or a boosting layer and a third layer containing the active ingredient levodopa and the benserazide.
2. The compound sustained-release three-layer tablet of piribedil, levodopa and benserazide according to claim 1, characterized in that the second layer is an isolation layer for dividing the drug-containing layer of piribedil and the drug-containing layer of levodopa and benserazide, and is also used as a boosting layer of the sustained-release tablet.
3. The compound sustained-release three-layer tablet of piribedil, levodopa and benserazide according to claim 1, which is characterized in that the mass ratio of the three active ingredients of piribedil, levodopa and benserazide is 30-70: 150-250: 25-80.
4. The piribedil, levodopa and benserazide compound sustained-release three-layer tablet according to claim 1, wherein the benserazide is present in the tablet as a hydrochloride salt.
5. The piribedil, levodopa and benserazide compound sustained-release three-layer tablet according to claim 1, characterized in that the coating film comprises a sustained-release semipermeable membrane and an immediate-release coating film, and the immediate-release coating film is coated outside the sustained-release semipermeable membrane.
6. The piribedil, levodopa and benserazide compound sustained-release three-layer tablet according to claim 5, wherein the sustained-release semipermeable membrane material is ethyl cellulose or cellulose acetate, and the adopted pore-forming agent is polyethylene glycol; the weight increment range of the slow-release semipermeable membrane reaches 6-12% of the tablet core.
7. The piribedil, levodopa and benserazide compound sustained-release three-layer tablet according to claim 5, characterized in that the quick-release coating film is coated outside the sustained-release semipermeable membrane, a gastric-soluble coating powder is adopted, and the weight increment range of the quick-release coating film reaches 1-3% of that of the tablet core.
8. The piribedil, levodopa and benserazide compound sustained-release three-layer tablet according to claim 1, wherein the first layer comprises piribedil and pharmaceutically acceptable auxiliary materials, and the second layer comprises polyoxyethylene, sodium chloride, red iron oxide, hypromellose and magnesium stearate; the third sheet layer comprises levodopa, benserazide hydrochloride and pharmaceutically acceptable auxiliary materials.
9. The compound sustained-release three-layer tablet of piribedil, levodopa and benserazide according to claim 1, characterized in that the first layer comprises the following components by mass:
Figure FDA0002382427610000011
Figure FDA0002382427610000021
the second slice composition by mass is as follows:
Figure FDA0002382427610000022
the third slice composition by mass is as follows:
Figure FDA0002382427610000023
the coating film comprises the following components in percentage by mass:
slow release semipermeable membranes: 28-70 parts of cellulose acetate
2-6 parts of polyethylene glycol
Quick-release coating film: 5-20 parts of gastric coating powder.
10. A method for preparing the piribedil, levodopa and benserazide compound sustained-release three-layer tablet according to claim 9, which is characterized by comprising the following steps:
uniformly mixing the piribedil bulk drug, the first tablet disintegrating agent, the filler and the stabilizer in a formula ratio in a mixer, adding the prepared binder solution containing the solubilizer, performing wet granulation, drying and finishing wet granules, adding the lubricant, and uniformly mixing to obtain uniformly mixed first tablet granules;
uniformly mixing the second lamellar polyoxyethylene, sodium chloride, red ferric oxide and hydroxypropyl methylcellulose in a formula ratio in a mixer, performing dry granulation, adding magnesium stearate, and uniformly mixing to obtain second lamellar granules;
uniformly mixing the levodopa bulk drug and the benserazide hydrochloride bulk drug with the third-layer disintegrating agent, the filling agent and the adhesive in a formula ratio in a mixer, performing dry granulation, adding the lubricant, and uniformly mixing to obtain third-layer particles;
adding the obtained granules into corresponding slice layer charging hoppers respectively, and pressing into a three-layer slice to obtain a tablet core;
coating a slow-release semipermeable membrane on a tablet core, aging properly, and punching holes on the upper surface and the lower surface of the tablet core by using a laser punching machine;
finally, the coating is coated with a quick-release coating film.
CN202010087042.9A 2020-02-11 2020-02-11 Piribedil, levodopa and benserazide compound sustained-release three-layer tablet and preparation method thereof Pending CN111084777A (en)

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