64results about How to "Comply with medicinal requirements" patented technology

The present invention provides a butyl phthalide raw material drug product with the butyl phthalide content not less than 99.0%; the raw material drug is stable in quality, and can ensure the clinical curative effect and drug safety of a butyl phthalide preparation.

The invention provides a butylphthalide medicine active composition, which comprises the following ingredients: first ingredients: the butylphthalide content is higher than or equal to 98.0 percent; second ingredients: the second ingredients are one kind of materials or several kinds of materials selected from methylene phthalide, ethylene phthalide, propylene phthalide, butane phthalide, amylene phthalide, phthalide, methyl phthalide, ethyl phthalide, propyl phthalide and amyl phthalide, in addition, the content of the second ingredients is higher than 0 but is lower than or equal to 2.0 percent, when the second ingredients comprise any one kind of materials from methylene phthalide, ethylene phthalide, propylene phthalide, butane phthalide and amylene phthalide, the content of any one kind of included ingredients does not exceed 0.5 percent, and when the second ingredients comprise any one kind of materials from phthalide, methyl phthalide, ethyl phthalide, propyl phthalide and amyl phthalide, the content of any one kind of included ingredients does not exceed 1.0 percent. The quality of the medicine active composition is stable, and the clinic curative effect and the medication safety of the butylphthalide preparation can be ensured.

The invention relates to a method for preparing abiraterone which is a key intermediate of abiraterone acetate serving as a medicament for treating prostatic cancer and a method for preparing the abiraterone acetate by using the intermediate thereof. The methods are simple in processes, and the products have high purity and low content of impurities.

The invention discloses a preparation method for a pharmaceutical crystal form of febuxostat. The preparation method comprises the following steps: dissolving the febuxostat in an ethanol aqueous solution, and carrying out heating and dissolving under stirring; carrying out hot filtration, slowly cooling a filtrate, adding a seed crystal, carrying out stirring until a solid is separated, continuing cooling, maintaining the temperature, and carrying out crystallization; and carrying out filtering, placing a filter cake in a hot-air drying oven, and carrying out drying so as to obtain a product. The method provided by the invention has the advantages of simple and convenient operation, good repeatability, high product purity and yield, good crystal stability, and applicability to industrial production.

The present invention discloses a hydrobromic acid vortioxetine crystal that has diffraction peaks at 8.55+/-0.2, 13.05+/-0.2, 13.44+/-0.2, 14.46+/-0.2, 15.20+/-0.2, 16.63+/-0.2, 16.94+/-0.2, 17.22+/-0.2, 17.85+/-0.2, 19.83+/-0.2, 20.43+/-0.2, 21.33+/-0.2, 23.14+/-0.2, 23.60+/-0.2, 24.77+/-0.2, 26.25+/-0.2, 26.72+/-0.2, 26.96+/-0.2, 29.69+/-0.2, 30.52+/-0.2, 33.33+/-0.2, 33.89+/-0.2, 34.89+/-0.2, 35.54+/-0.2, 37.03+/-0.2, and 38.33+/-0.2 in a powder X-ray diffraction diagram represented with 2 theta. In addition, the present invention further discloses a preparation method for the crystal. The hydrobromic acid vortioxetine crystal and the preparation method therefor in the present invention have good repeatability, easy operation, good product stability, and high yield and purity, and are suitable for industrial production.

The invention discloses a synthetic method of histamine dichloride, and belongs to the field of drug synthesis. The synthetic method comprises the following steps: preparing a cyano methylimidazole intermediate through oxidization of TCCA (Trichloroisocyanuric Acid) under an alkaline condition by taking L-histidine as an original raw material, and then preparing medicinal histamine dichloride through catalytic hydrogenation and one-step salifying process. In the histamine dichloride compounded through the synthetic method, the content of related substances is less than 0.5 percent, the content of a single impurity is less than 0.1 percent, and the histamine dichloride accords with medicinal level. A reagent adopted by the technology is cheap and of low-toxicity, the reaction is safe and reliable, an alcohol solvent can be recycled, after-treatment operation is simple and convenient, and the technology is environment-friendly and is beneficial for large-scale industrial production.

The invention discloses a preparation method of bazedoxifene acetate polycrystalline type B. Bazedoxifene free alkali and glacial acetic acid are taken as raw materials and salified to obtain the bazedoxifene acetate polycrystalline type B. The operation conditions of the preparation process are simple and do not need to be carried out under the protection of inert gas; no antioxidant is used in the preparation process; the yield and purity of the prepared product are high, and therefore the product is suitable for industrial production.

The invention relates to a refining method of ibutilide fumarate raw material medicine capable of resisting arrhythmia. The method comprises the following steps of: dissolving a crude ibutilide fumarate product into a solvent with stronger polarity or medium polarity, decoloring with activated carbon and filtering; then adding a solvent with smaller polarity to an obtained filter liquor, stirring, standing still and removing the supernate; adding a solvent with medium polarity to an obtained residue; and recrystallizing to obtain high-purity ibutilide fumarate. In the invention, impurities in the crude ibutilide fumarate product are effectively removed by adopting a mixed solvent eluting method, which improves the product purity, ensures that the product conforms to the medicinal requirement and guarantees the safety of clinical medication. The invention has the advantages of stable product quality and simple process operation and is suitable for mass industrial production.

The invention relates to the field of pharmaceutical chemistry, and provides synthesizing and refining methods of rivaroxaban. The synthesis method comprises a step 1) of performing condensation reaction on 4-{4-[(5S)-5-(aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl}morpholin-3-one(LF-II) and 5-chlorothiophene-2-carboxylic acid (SMI) under an alkaline system to prepare crude rivaroxaban; the refining method further comprises a step 2) of stirring and crystallizing the crude rivaroxaban and an alcohol solution at room temperature to obtain high-purity refined rivaroxaban which meets requirements of desired crystal form. The synthesizing and refining methods are simple in operation of preparation processes, high in yield, low in pollution, and suitable for large-scale industrial production.

The invention provides a suspension of a triazole antifungal drug for an atomizer, and a preparation method of the suspension. The pH of the suspension is 3-8. The suspension comprises the triazole antifungal drug, surfactant, osmotic pressure regulation agent, metal complexing agent, a pH regulation agent and water, wherein the D50 diameter of the triazole antifungal drug is 1-10 [mu] m, the triazole antifungal drug occupies the total mass of the suspension by 0.025-1%, and a mass ratio of the triazole antifungal drug to the surfactant is 1:1-50:1. The invention also provides a preparation method for the suspension. The suspension provided by the invention has good stability and can be placed for one year at a constant temperature without obviously increasing a particle size.

The invention discloses a purification method of creatine phosphate sodium, which comprises the following steps: pretreating a creatine phosphate sodium mother solution with 40-70 vol% ethanol, loading the pretreated creatine phosphate sodium mother solution, eluting creatine by using a 0.02-0.15M electrolyte solution as an eluent, eluting the creatine phosphate sodium by using a 0.2-0.8M electrolyte solution as an eluent, collecting the eluate, crystallizing, and drying to obtain the creatine phosphate sodium. The method is simple, does not need to introduce sulfates or barium, and has high safety. The recovery rate of the prepared creatine phosphate sodium is high and up to 40%, and the purity reaches 99.80%, thereby satisfying the medicinal requirements.

The invention discloses a preparation method of an atazanavir hydrosulfate crystal form H1. The preparation method comprises the following steps: mixing atazanavir hydrosulfate with a solvent, and stirring to obtain the atazanavir hydrosulfate crystal form H1, wherein the solvent is a mixed solvent of methanol, butanone and ethyl acetate. The preparation method of an atazanavir hydrosulfate crystal form H1 disclosed by the invention has the advantages of high repeatability, easiness in operation and high yield; the methanol content in the product meets the requirements for medicinal use, and the chromatographic purity is high; thus, the product is more applicable to medicament and suitable for industrial production and has a potential market value.

The invention discloses a production method of a medicinal plastic bag. Polyethylene 5000S, PE2426H and PE3505 are fed into a blender mixer to be mixed in proportion of 50%, 25% and 25% and then fed into a grain pulling machine for high-temperature plasticizing, particles are cut out, the particles are fed into a hopper of a film blowing machine, heated extrusion is performed to fabricate a film, and the film is sealed and cut into the bag in the length direction. The medicinal plastic bag has the advantages of being high in transparency, resistant to water, good in steam permeability, capable of performing efficient sterilization and blocking germs and the like.

The invention discloses a high-purity esomeprazole sodium preparation method. The method comprises the following steps: A) dissolving esomeprazole sodium in a mixed solvent of an organic solvent A and an organic solvent B; B) dropping a sodium hydroxide aqueous solution, stirring the materials for crystallization; C) filtering the material, stirring a filter cake by a mixed solvent of acetone and an organic solvent C and washing the filter cake; and D) filtering the material, and performing vacuum drying on the filter cake to obtain the product. The method has the advantages of good repeatability, simple operation, high products yield, and high purity, and is suitable for industrial production.

The invention discloses a composition of an oxyclopidogrel optical isomer or a salt thereof and application of the composition, and belongs to the technical field of medicines. The composition comprises an optical isomer of clopidogrel represented by a formula I or a salt thereof, and one or two compounds represented by formula IIA and formula IIB and salts thereof.

The invention discloses a method for preparing an oxazolidinone-based antibacterial drug through acid catalyzed debenzylation, and belongs to the field of medicine and chemical industry. According tothe present invention, a compound represented by a formula II is subjected to debenzylation under the action of an acid catalyst to obtain a compound represented by a formula I; and the method has advantages of inexpensive and easily-available raw material, safe and simple operation, environmental protection technology, high product quality, high yield and easily-controlled metal residue in the product, and is suitable for commercial production.

The invention relates to a method for producing dronedarone hydrochloride, which is used for solving the technical problems of high energy consumption and poor safety in the existing dronedarone hydrochloride production technique. In ethyl acetate, a hydrochloric acid ethanol solution is utilized to treat dronedarone to obtain the dronedarone hydrochloride. Due to the use of the hydrochloric acid ethanol solution, the invention ensures the low production cost and high industrial safety, so that the reaction is carried out under mild conditions, thereby obtaining the high-yield high-quality dronedarone hydrochloride.