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CN110917166A - Cefteram pivoxil tablet and preparation method thereof - Google Patents

Cefteram pivoxil tablet and preparation method thereof Download PDF

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Publication number
CN110917166A
CN110917166A CN201911414130.9A CN201911414130A CN110917166A CN 110917166 A CN110917166 A CN 110917166A CN 201911414130 A CN201911414130 A CN 201911414130A CN 110917166 A CN110917166 A CN 110917166A
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Prior art keywords
cefteram pivoxil
cefteram
pivoxil
acrylic resin
tablets
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CN201911414130.9A
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Inventor
张园
段松鹏
宋美云
丁兆朋
耿强
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Shandong Luoxin Pharmaceutical Group Hengxin Pharmacy Co Ltd
Shandong Yu Xin Pharmaceutcal Corp Ltd
Shandong Luoxin Pharmaceutical Group Co Ltd
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Shandong Luoxin Pharmaceutical Group Hengxin Pharmacy Co Ltd
Shandong Yu Xin Pharmaceutcal Corp Ltd
Shandong Luoxin Pharmaceutical Group Co Ltd
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Priority to CN201911414130.9A priority Critical patent/CN110917166A/en
Publication of CN110917166A publication Critical patent/CN110917166A/en
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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • A61K9/28Dragees; Coated pills or tablets, e.g. with film or compression coating
    • A61K9/2806Coating materials
    • A61K9/2833Organic macromolecular compounds
    • A61K9/286Polysaccharides, e.g. gums; Cyclodextrin
    • A61K9/2866Cellulose; Cellulose derivatives, e.g. hydroxypropyl methylcellulose
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K31/00Medicinal preparations containing organic active ingredients
    • A61K31/33Heterocyclic compounds
    • A61K31/395Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins
    • A61K31/54Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one sulfur as the ring hetero atoms, e.g. sulthiame
    • A61K31/542Heterocyclic compounds having nitrogen as a ring hetero atom, e.g. guanethidine or rifamycins having six-membered rings with at least one nitrogen and one sulfur as the ring hetero atoms, e.g. sulthiame ortho- or peri-condensed with heterocyclic ring systems
    • A61K31/545Compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins, cefaclor, or cephalexine
    • A61K31/546Compounds containing 5-thia-1-azabicyclo [4.2.0] octane ring systems, i.e. compounds containing a ring system of the formula:, e.g. cephalosporins, cefaclor, or cephalexine containing further heterocyclic rings, e.g. cephalothin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • A61K9/2004Excipients; Inactive ingredients
    • A61K9/2009Inorganic compounds
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • A61K9/2004Excipients; Inactive ingredients
    • A61K9/2022Organic macromolecular compounds
    • A61K9/2031Organic macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds, e.g. polyethylene glycol, polyethylene oxide, poloxamers
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00Medicinal preparations characterised by special physical form
    • A61K9/20Pills, tablets, discs, rods
    • A61K9/2004Excipients; Inactive ingredients
    • A61K9/2022Organic macromolecular compounds
    • A61K9/205Polysaccharides, e.g. alginate, gums; Cyclodextrin
    • A61K9/2059Starch, including chemically or physically modified derivatives; Amylose; Amylopectin; Dextrin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61PSPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P31/00Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
    • A61P31/04Antibacterial agents

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  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Epidemiology (AREA)
  • Engineering & Computer Science (AREA)
  • Bioinformatics & Cheminformatics (AREA)
  • Communicable Diseases (AREA)
  • Oncology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Medicinal Preparation (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)

Abstract

The invention belongs to the technical field of medicines, and particularly relates to a cefteram pivoxil tablet and a preparation method thereof. Mixing the cefditoren pivoxil and the sodium carboxymethyl starch, dissolving the mixture in a nontoxic solvent polyethylene glycol 400 which can be mixed and dissolved with water, adsorbing the mixture by using a porous silicon dioxide carrier, and finally preparing the mixture into tablets. Since the drug is adsorbed on the silica gel in a molecular state, the drug is easily dissolved when contacting the dissolution medium, and the dissolution rate of the drug is increased.

Description

Cefteram pivoxil tablet and preparation method thereof
The technical field is as follows:
the invention belongs to the field of pharmaceutical preparations, and particularly relates to a cefteram pivoxil tablet and a preparation method thereof.
Background art:
cefteram pivoxil, chemical name (6R, 7R) -7- [ (Z) -2- (2-amino-4-thiazolyl) -2- (methoxyimino) acetamido ] -3- [2- (5-methyl-2H-tetrazol-2-yl) methyl ] -8-oxo-5-thia-1-azabicyclo [4,2,0] oct-2-ene-2-carboxylic acid pivaloyloxymethyl ester. The cefteram pivoxil belongs to oral third-generation cephalosporin, is a prodrug of the cefteram modified by an ester group structure, has weaker self activity, and generates active cefteram by esterase hydrolysis after oral absorption to generate antibacterial activity. Has spectrum antibacterial effect on gram negative and positive bacteria such as Citrobacter, Serratia and Enterobacter. The medicine is mainly used for treating infections caused by streptococcus, pneumococcus, escherichia coli, klebsiella, proteus and haemophilus influenzae, such as sphagitis, tonsillitis, bronchitis, pneumonia, pyelonephritis, cystitis, gonococcal urethritis, cholecystitis, otitis media, scarlet fever and the like.
The cefteram pivoxil has poor water solubility, almost is insoluble in water, has good fat solubility, is easily soluble in solvents such as methanol and the like, has better photo-thermal stability in a solid state, is not stable in a solution, and is easily decomposed when meeting acid and alkali. Therefore, the existing cefteram pivalol preparation has slow dissolution, absorption and distribution in vivo and relatively low bioavailability.
Patent CN108113972A discloses a pharmaceutical composition containing cefteram pivoxil, wherein sodium propionate is added into the composition as a gel inhibitor, so as to effectively inhibit the solid preparation from gelling in an aqueous solution, effectively improve the dissolution performance of the solid preparation, and further improve the bioavailability. And the problem of bitter taste of the granular preparation is solved by utilizing the synergistic flavoring effect of the sodium propionate and the aspartame.
Patent CN103919744A discloses a cefteram pivoxil tablet, which comprises the following components in parts by weight: 80-120 parts of cefteram pivoxil; 80-100 parts of starch; 5-15 parts of lactose; 5-15 parts by weight of microcrystalline cellulose; 15-30 parts by weight of croscarmellose sodium; 0.5-2 parts by weight of magnesium stearate; and (4) a proper amount of adhesive. The tablet adopts the croscarmellose sodium to match with the microcrystalline cellulose, so that the disintegration time limit and the release effect of the tablet are unexpectedly improved, the drug effect is more obvious, but the impurity content is higher, and the stability of the preparation needs to be improved.
Patent CN1709262A discloses a cefteram composition for injection, which comprises the following components: cefteram or a pharmaceutically acceptable salt thereof as an active ingredient and a cosolvent as a cosolvent ingredient; the cosolvent is basic amino acid, or inorganic acid salt of alkali metal, or organic acid salt of alkali metal, or inorganic acid salt of alkaline earth metal, or organic acid salt of alkaline earth metal; the proportion of the cefteram or the medicinal salt thereof to the cosolvent is 1: 0.05-20 in parts by weight. Due to the addition of a proper amount of cosolvent, the cefteram composition becomes a soluble medicament, has good water solubility, can fully exert the antibacterial action of the active cefteram when used as an injection medicament, and overcomes the defect of the existing cefteram ester oral preparation and can be used for all indications of the cefteram ester.
Patent CN100998595A provides a pharmaceutical composition of a cyclodextrin inclusion compound of cefteram pivoxil, which comprises the following basic components: A) cefteram pivoxil, and B) a pharmaceutically acceptable cyclodextrin; the cyclodextrin is selected from B-cyclodextrin or one or more of derivatives thereof. The clathrate compound of the invention obviously increases the solubility and stability of the drug, and simultaneously has lower hemolysis stimulation and high activity.
The method adopts a method of adding a pharmaceutical adjuvant to improve the solubility and stability of the cefditoren pivoxil.
Patent CN102351886A discloses a cefteram pivoxil crystal and a composition tablet of the crystal, starting from a cefteram pivoxil raw material drug, a cefteram pivoxil crystal with a small particle size is prepared by an ultrasonic method, and the obtained cefteram pivoxil crystal is added with pharmaceutically acceptable auxiliary materials to prepare the cefteram pivoxil composition tablet.
Patent CN108143723A discloses a cefoperan pivoxil tablet, which is mainly composed of cefoperan pivoxil micropowder with the particle size of 35-50 μm, and is assisted by ultrafine powder with the particle size of 3-6 μm, so that the cefoperan pivoxil tablet has a good space scale effect, and meanwhile, mannitol with poor fluidity and microcrystalline cellulose with good fluidity are matched according to a certain proportion to be used as a disintegrating agent.
Patent CN102091039A discloses a solid preparation of cefteram pivoxil liposome, which is prepared from the following raw and auxiliary materials in parts by weight: 1 part of cefteram pivoxil, 4-25 parts of soybean lecithin, 1-12 parts of cholesterol, 0.5-20 parts of tween 80, 1-4 parts of soyasterol and 5-40 parts of a pharmaceutically acceptable carrier. The liposome solid preparation has high entrapment rate, uniform particle size and long retention time of the drug in blood circulation, but the production control requirement of the liposome solid preparation is higher, so that the clinical application is greatly limited.
Summarizing the preparation of the cefteram pivoxil in the prior art, the tablet is a common preparation form, and a wetting agent water or alcohol is required to be added in the wet granulation process, so that gelation is easy to cause, and the bonding phenomenon is serious; although the dry granulation can avoid the problem of gelation, the problem of dissolution reduction caused by gelation when meeting water in the medication process still exists; the direct tabletting effect of the powder is poor, so a large amount of filler is generally required to be added, and the requirement on the filler is high, so that the preparation cost is greatly increased, and the medicine is not dissolved well.
The invention content is as follows:
in order to overcome the defects in the prior art, the invention provides a cefteram pivoxil tablet and a preparation method thereof.
The invention provides a cefteram pivoxil tablet which is prepared from the following raw and auxiliary materials:
Figure BDA0002350744630000021
Figure BDA0002350744630000031
wherein, the coating material comprises acrylic resin No. 2, acrylic resin No. 3, castor oil, talcum powder and 85% ethanol, and the mass ratio is that acrylic resin No. 2: acrylic resin No. 3: castor oil: talc powder: 15% ethanol: 5:3:2: 25.
the preparation method of the cefteram pivoxil tablet provided by the invention comprises the following steps:
(1) mixing and grinding the cefditoren pivoxil and the sodium carboxymethyl starch, sieving the mixture with a 200-mesh sieve, and sieving the silicon dioxide with a 100-mesh sieve
(2) Adding polyethylene glycol 400 into the mixed powder of the cefteram pivoxil and the sodium carboxymethyl starch, stirring and dissolving,
(3) the dissolved cefditoren pivoxil and sodium carboxymethyl starch are slowly sprayed on the silicon dioxide in a fluidized bed, so that the solution is completely absorbed.
(4) Tabletting
(5) Adding acrylic resin No. 2, acrylic resin No. 3, castor oil, talcum powder and croscarmellose sodium into 85% ethanol, heating and stirring for 8 hours to form a coating solution;
(6) and (4) putting the plain tablets obtained in the step (4) into a coating pan, atomizing the coating solution into small liquid drops through a spray gun, attaching the small liquid drops to the surface of the plain tablets for coating, and drying to obtain the cefteram pivoxil tablets.
Compared with the prior art, the invention has the following beneficial technical effects:
(1) the hydrophobic cefditoren pivoxil and a large amount of water-soluble sodium carboxymethyl starch are ground together to prepare a mixture, the particle sizes of the medicine and the auxiliary materials can be reduced to be very small, a large amount of water-soluble auxiliary material particles are adsorbed around the fine medicine particles, the mutual aggregation of the fine medicine particles is prevented, the fine medicine particles exist in the mixture stably, and when the water-soluble auxiliary materials are dissolved, the fine medicine particles are directly exposed in a dissolving medium, so the dissolution/dissolution is accelerated.
(2) Mixing the cefditoren pivoxil and the sodium carboxymethyl starch, dissolving the mixture in a nontoxic solvent polyethylene glycol 400 which can be mixed and dissolved with water, adsorbing the mixture by using a porous silicon dioxide carrier, and finally preparing the mixture into tablets. Since the drug is adsorbed on the silica gel in a molecular state, the drug is easily dissolved when contacting the dissolution medium, and the dissolution rate of the drug is increased.
(3) Through the determination of a plurality of dissolution curves, compared with the prior art, the prepared cefteram pivoxil tablet can ensure higher dissolution in solutions with different pH values and is more suitable for the dissolution environment of the medicine in vivo.
The specific implementation mode is as follows:
example 1
The cefteram pivoxil tablet is prepared into 1000 tablets by the following raw and auxiliary materials:
Figure BDA0002350744630000041
the preparation method comprises the following steps:
(1) mixing and grinding the cefteram pivoxil and the sodium carboxymethyl starch, sieving the mixture with a 200-mesh sieve, and sieving the silicon dioxide with a 120-mesh sieve for later use;
(2) adding the mixed powder of the cefteram pivoxil and the sodium carboxymethyl starch into polyethylene glycol 400, and stirring for dissolving;
(3) slowly spraying the dissolved cefteram pivoxil and the sodium carboxymethyl starch on silicon dioxide in a fluidized bed to ensure that the solution is completely absorbed;
(4) tabletting the silicon dioxide absorbed with the cefteram pivoxil and the sodium carboxymethyl starch;
(5) adding acrylic resin No. 2, acrylic resin No. 3, castor oil, talcum powder and croscarmellose sodium into 85% ethanol, heating to 35 ℃, and stirring for 8 hours to form a coating solution;
(6) and (4) putting the plain tablets obtained in the step (4) into a coating pan, atomizing the coating solution into small liquid drops through a spray gun, attaching the small liquid drops to the surface of the plain tablets for coating, and drying to obtain the cefteram pivoxil tablets.
Example 2
The cefteram pivoxil tablet is prepared into 1000 tablets by the following raw and auxiliary materials:
Figure BDA0002350744630000042
the preparation method comprises the following steps:
(1) mixing and grinding the cefteram pivoxil and the sodium carboxymethyl starch, sieving the mixture with a 200-mesh sieve, and sieving the silicon dioxide with a 120-mesh sieve for later use;
(2) adding the mixed powder of the cefteram pivoxil and the sodium carboxymethyl starch into polyethylene glycol 400, and stirring for dissolving;
(3) slowly spraying the dissolved cefteram pivoxil and the sodium carboxymethyl starch on silicon dioxide in a fluidized bed to ensure that the solution is completely absorbed;
(4) tabletting the silicon dioxide absorbed with the cefteram pivoxil and the sodium carboxymethyl starch;
(5) adding acrylic resin No. 2, acrylic resin No. 3, castor oil, talcum powder and croscarmellose sodium into 85% ethanol, heating to 40 ℃, and stirring for 8 hours to form a coating solution;
(6) and (4) putting the plain tablets obtained in the step (4) into a coating pan, atomizing the coating solution into small liquid drops through a spray gun, attaching the small liquid drops to the surface of the plain tablets for coating, and drying to obtain the cefteram pivoxil tablets.
Example 3
The cefteram pivoxil tablet is prepared into 1000 tablets by the following raw and auxiliary materials:
Figure BDA0002350744630000051
the preparation method comprises the following steps:
(1) mixing and grinding the cefteram pivoxil and the sodium carboxymethyl starch, sieving the mixture with a 200-mesh sieve, and sieving the silicon dioxide with a 120-mesh sieve for later use;
(2) adding the mixed powder of the cefteram pivoxil and the sodium carboxymethyl starch into polyethylene glycol 400, and stirring for dissolving;
(3) slowly spraying the dissolved cefteram pivoxil and the sodium carboxymethyl starch on silicon dioxide in a fluidized bed to ensure that the solution is completely absorbed;
(4) tabletting the silicon dioxide absorbed with the cefteram pivoxil and the sodium carboxymethyl starch;
(5) adding acrylic resin No. 2, acrylic resin No. 3, castor oil, talcum powder and croscarmellose sodium into 85% ethanol, heating to 45 ℃, and stirring for 8 hours to form a coating solution;
(6) and (4) putting the plain tablets obtained in the step (4) into a coating pan, atomizing the coating solution into small liquid drops through a spray gun, attaching the small liquid drops to the surface of the plain tablets for coating, and drying to obtain the cefteram pivoxil tablets.
Experimental example 1 dissolution measurement
According to the dissolution determination method under the item of the cefditoren pivoxil tablet in the 17 th edition of the Japanese medicine office, according to the paddle method, hydrochloric acid solution with pH value of 1.0, acetate buffer solution with pH value of 4.5, phosphate buffer solution with pH value of 6.8 and 900mL of purified water are respectively used as dissolution media, the rotating speed is 75 revolutions per minute, the operation is carried out according to the method, after 30 minutes, a proper amount of solution is taken, filtered, a proper amount of subsequent filtrate is taken precisely, the solution containing about 20 mu g of cefditoren pivoxil in each 1mL is prepared by quantitative dilution with the dissolution media, the absorbance is measured at the wavelength of 300nm, a proper amount of cefditoren pivoxil reference substance is weighed precisely, the solution containing about 20 mu g of cefditoren pivoxil in each 1mL is prepared by dissolving and quantitative dilution with the dissolution media, and the determination is carried out by the same method. The amount of elution was calculated for each tablet.
Hydrochloric acid solution at pH 1.0: precisely measuring 9.0ml of concentrated hydrochloric acid, adding water to dilute the concentrated hydrochloric acid to 1000ml, and shaking up to obtain the product.
Acetate buffer at pH 4.5: taking 2.99g of sodium acetate trihydrate and 14.0mL of 2mol/L acetic acid (120.0 g of glacial acetic acid is taken, water is added for dilution to 1000mL, and the mixture is shaken up) and adding water for dissolution and dilution to 1000mL, and the mixture is shaken up to obtain the sodium acetate.
phosphate buffer at pH 6.8: precisely weighing 6.80g of potassium dihydrogen phosphate, adding 112.0mL of 0.2mol/L sodium hydroxide solution (obtained by dissolving 8.0g of sodium hydroxide in water and diluting to 1000 mL), adding water to dissolve and dilute to 1000mL, and shaking up to obtain the potassium dihydrogen phosphate.
Reference formulation 1: a tablet of cefteram pivoxil prepared according to patent CN102351886 formulation example 1.
Reference formulation 2: cefditoren pivoxil tablets prepared according to patent CN103919744, example 1.
Reference formulation 3: cefditoren pivoxil tablets prepared according to patent CN108113972, example 1.
Reference formulation 4: cefditoren pivoxil tablets prepared according to patent CN108143723, example 1.
The samples of examples 1 to 3 of the present invention and reference preparations 1 to 4 were taken for testing, respectively, and the results were as follows:
Figure BDA0002350744630000061
experimental example 2 stability test
And (4) investigating items: properties, dissolution rate, content, related substances and water. The test is carried out according to the guiding principle of 9001 raw material medicaments and preparation stability test in the fourth pharmacopoeia 2015 edition.
(1) Test for influencing factor
High-temperature test: taking the cefditoren pivoxil tablet obtained in the embodiment 1 of the invention, placing the tablet at the temperature of 60 ℃ for 10 days, sampling on the 5 th day and the 10 th day, and detecting according to a stability focus examination item.
High humidity test: taking the cefteram pivoxil tablet obtained in the embodiment 1 of the invention, placing the cefteram pivoxil tablet in a constant-humidity closed container, placing the cefteram pivoxil tablet in a condition of 90% +/-5% relative humidity for 10 days at 25 ℃, sampling on the 5 th day and the 10 th day, and detecting according to the requirements of key stability investigation projects.
Strong light irradiation test: the cefteram pivoxil tablet obtained in the embodiment 1 of the invention is put in a lighting box provided with a fluorescent lamp, is placed for 10 days under the condition that the illumination intensity is 4500lx +/-500 lx, and is sampled on the 5 th day and the 10 th day, and is detected according to the key stability investigation items.
The effect test results are shown in the following table:
Figure BDA0002350744630000071
(2) accelerated test
The cefteram pivoxil tablets obtained in the embodiment 1 of the invention are packaged according to the market and placed for 6 months under the conditions of the temperature of 40 +/-2 ℃ and the relative humidity of 75% +/-5%. Samples were taken at the end of 1 month, 2 months, 3 months and 6 months during the test period, and were tested according to stability focus test items.
The results of the accelerated testing are shown in the following table:
Figure BDA0002350744630000072
(3) long term test
Taking the cefteram pivoxil tablets obtained in the embodiment 1 of the invention, packaging the cefteram pivoxil tablets according to the market, placing the cefteram pivoxil tablets for 12 months under the conditions of 25 ℃ plus or minus 2 ℃ and 60 percent plus or minus 10 percent of relative humidity, sampling every 3 months, sampling for 0 month, 3 months, 6 months, 9 months and 12 months respectively, and detecting according to the stability key examination item.
Figure BDA0002350744630000081

Claims (6)

1. The cefteram pivoxil tablet is characterized by being prepared from the following raw and auxiliary materials:
Figure FDA0002350744620000011
2. the cefteram pivoxil tablet according to claim 1, which is characterized by being prepared from the following raw and auxiliary materials:
Figure FDA0002350744620000012
3. the cefteram pivoxil tablet according to any one of claims 1 or 2, characterized in that the coating material consists of acrylic resin No. 2, acrylic resin No. 3, castor oil, talc, 85% ethanol.
4. The cefteram pivoxil tablet according to claim 3, characterized in that the mass ratio of the auxiliary materials composing the coating material is acrylic resin No. 2: acrylic resin No. 3: castor oil: talc powder: 85% ethanol-15: 5:3:2: 25.
5. The process for the preparation of the cefteram pivoxil tablet according to claim 4, characterized by comprising the steps of:
(1) mixing and grinding the cefditoren pivoxil and the sodium carboxymethyl starch, sieving the mixture with a 200-mesh sieve, sieving the silicon dioxide with a 100-mesh sieve,
(2) adding polyethylene glycol 400 into the mixed powder of the cefteram pivoxil and the sodium carboxymethyl starch, stirring and dissolving,
(3) slowly spraying the dissolved cefteram pivoxil and the sodium carboxymethyl starch on silicon dioxide in a fluidized bed to ensure that the solution is completely absorbed,
(4) tabletting is carried out, and the mixture is pressed into tablets,
(5) adding acrylic resin No. 2, acrylic resin No. 3, castor oil, talcum powder and croscarmellose sodium into 85% ethanol, heating and stirring for 8 hours to form a coating solution;
(6) and (4) putting the plain tablets obtained in the step (4) into a coating pan, atomizing the coating solution into small liquid drops through a spray gun, attaching the small liquid drops to the surface of the plain tablets for coating, and drying to obtain the cefteram pivoxil tablets.
6. The method for preparing cefteram pivoxil according to claim 5, wherein the mixing temperature in the step (5) is 35-45 ℃.
CN201911414130.9A 2019-12-31 2019-12-31 Cefteram pivoxil tablet and preparation method thereof Pending CN110917166A (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101103965A (en) * 2006-05-02 2008-01-16 兰贝克赛实验室有限公司 Stable solid preparation containing amorphous cefditoren pivoxil and preparation method thereof
CN103919744A (en) * 2014-04-25 2014-07-16 优胜美特制药有限公司 Cefteram pivoxil tablet and preparation process thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101103965A (en) * 2006-05-02 2008-01-16 兰贝克赛实验室有限公司 Stable solid preparation containing amorphous cefditoren pivoxil and preparation method thereof
CN103919744A (en) * 2014-04-25 2014-07-16 优胜美特制药有限公司 Cefteram pivoxil tablet and preparation process thereof

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
缪立德主编: "《药剂学》", 31 May 1999, 中国医药科技出版社 *

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