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52 results about "Ampicillin Sodium" patented technology

The sodium salt form of ampicillin, a broad-spectrum semisynthetic derivative of aminopenicillin. Ampicillin sodium inhibits bacterial cell wall synthesis by binding to penicillin binding proteins, thereby inhibiting peptidoglycan synthesis, a critical component of the bacterial cell wall.

Method for preparing ampicillin sodium by menstruum crystallization method

ActiveCN104151324AControl the speed of crystallizationControl the crystallization rateOrganic chemistryDiisopropylamineDissolution reaction
The invention discloses a method for preparing ampicillin sodium by a menstruum crystallization method. The method comprises the following steps: firstly, dissolving sodium 2-ethylhexanoate into methanol, controlling the temperature to 15 DEG C, adding ampicillin acid into dichloromethane, and dripping diisopropylamine for a dissolution reaction; adding a sodium 2-ethylhexanoate solution into a crystallization tank, then adding a dichloromethane liquation agent in a flowing manner, and adding a seed crystal for growing crystals in a standing manner; then adding the dichloromethane liquation agent for crystallization; controlling the crystallization temperature to 20-25 DEG C; controlling the flowing acceleration of the liquation agent to 100 ml/h; after the crystallization reaction is completed, discharging materials, filtering the discharged materials, and drying the filtered materials to obtain the ampicillin sodium. According to the method, the methanol solvent, in which the ampicillin sodium is easy to dissolve, is selected for use, and then the dichloromethane solvent is used for dissolving out products, so that the crystallization speed of the product can be controlled; in addition, measures of adding the seed crystal for growing the crystal, controlling the dissolving temperature and the crystallization temperature, controlling the flowing acceleration of the liquation agent and the like are taken, so that the crystallization speed can be controlled, the crystal nucleus of the product are enlarged and uniform, the product purity is high, the dissolving residue is low, and the quality is stable.
Owner:山东安信制药有限公司

Novel ampicillin sodium used for injection

The invention relates to novel ampicillin sodium used for injection and a preparation method thereof, and belongs to the technical field of medicines. The novel ampicillin sodium used for injection comprises the following ingredients in parts by weight: 1 part of ampicillin sodium, 5.5-6 parts of xanthan gum, 3.5-3.7 parts of sodium carboxymethylcellulose, 2.8-2.9 parts of an emulsifying agent, 0.8-1 part of an anti-sticking agent, 1.1-1.2 parts of a stabilizing agent and 30-35 parts of a solvent, wherein the stabilizing agent dioxy-cyclohexanone-lactide copolymer is a copolymer with a specific ratio and has a crucial effect on the stability of the preparation. Through a slow-release effect of a micro-capsule, the injection preparation is administrated once instead of twice to four times every day, and the dosing interval is shortened, so that the injection preparation is convenient in use; the bioavailability is improved, and the dosage is reduced, so that the blood concentration is stable, the curative effect is improved, and the adverse reaction is reduced. The ampicillin sodium used for injection provided by the invention is simple in preparation process and low in cost, so that the ampicillin sodium is suitable for large-scale production and is a product having a good market prospect.
Owner:石药集团中诺药业(石家庄)有限公司

Children ampicillin sodium compound entity and pharmaceutical preparation thereof

The present invention discloses a children ampicillin sodium compound entity, wherein the preparation method comprises: (1) adding ampicillin to a mixed solution of dichloromethane and triethylamine, cooling, adding a small amount of a sodium 2-ethylhexanoate solution, increasing the solution temperature, adding the remaining sodium 2-ethylhexanoate solution, carrying out suction filtration, washing, and carrying out vacuum drying to obtain an ampicillin sodium crude product; (2) dissolving the ampicillin sodium crude product in purified water, adding active carbon, carrying out stirring decolorizing, and filtering; (3) adding an extractant to the filtrate under the stirring, transferring and filling into a pressure resistance container, removing air bubbles, carrying out sealing oscillation, carrying out temperature control freezing, and taking out; and (4) carrying out liquid-solid separation, discarding the extractant, adding acetone in a dropwise manner at a temperature of 5 DEG C after the solid melts, stirring at a slow speed, growing the grain, filtering, washing, and carrying out vacuum drying to obtain the ampicillin sodium finished product. The children ampicillin sodium compound entity of the present invention has advantages of good solubility, good clarity, low related substance content, good stability, low toxic-side effect, and the like.
Owner:ZHEJIANG CHANGDIAN PHARMA

Composition for treating swine infectious atrophic rhinitis and preparation method thereof

The invention discloses a composition for treating swine infectious atrophic rhinitis and a preparation method thereof, and aims to provide the composition for treating the swine infectious atrophic rhinitis caused by infection of swine bordetella bronchiseptica and toxigenic pasteurella multocida, which reduces pathogenic medicament resistance and is convenient to use, and the preparation method thereof. The composition comprises the following components in percentage by weight: 5 to 15 percent of sulfamonomethoxine sodium, 1 to 3 percent of lactic acid trimethoprim (TMP1), 3 to 8 percent of ampicillin sodium, 5 percent of sodium carbonate, 5 to 15 percent of sodium bicarbonate and the balance of anhydrous dextrose. By adopting the sulfamonomethoxine sodium and the ampicillin sodium as anti-pathogenic components, the pathogenic microorganism can be effectively killed, the probability of medicament resistance can be reduced, the composition has an effect on secondary bacterial infection, the lactic acid TMP has obvious synergistic effect on the sulfamonomethoxine sodium and the ampicillin sodium, the sodium carbonate can contribute to dissolving the sulfamonomethoxine sodium and the ampicillin sodium, and the sodium bicarbonate relieves the side effect of the sulfamonomethoxine sodium and prevents crystalluria.
Owner:TIANJIN SHENGJI GRP CO LTD

A kind of high-purity mezlocillin sodium preparation and preparation method thereof

The invention discloses a high-purity mezlocillin sodium preparation. The high-purity mezlocillin sodium preparation comprises uniform granules with the grain sizes smaller than 50 micrometers. The content of total impurities in the high-purity mezlocillin sodium preparation is lower than or equal to 0.68%, and the content of polymers in the high-purity mezlocillin sodium preparation is lower than or equal to 0.06%. The invention further discloses a method for preparing the high-purity mezlocillin sodium preparation. The method includes six steps of preparing ampicillin sodium solution; preparing mezlocillin sodium condensation liquid; preparing mezlocillin dry powder; preparing mezlocillin sodium solution; preparing mezlocillin sodium active compounds; preparing the high-purity mezlocillin sodium preparation. The high-purity mezlocillin sodium preparation and the method have the advantages that existing problems can be solved by the aid of the high-purity mezlocillin sodium preparation prepared by the aid of novel crystallization technologies, and the quality of the high-purity mezlocillin sodium preparation can be greatly improved; the high-purity mezlocillin sodium preparation is high in dissolving rate and purity, low in impurity content and insoluble particle content, good in flowability and easy to separately package, and the like.
Owner:NORTH CHINA PHARMA COMPANY

Pharmaceutical composition for preventing and treating avian salmonellosis and preparation method thereof

The invention relates to a pharmaceutical composition for preventing and treating avian salmonellosis and a preparation method of the pharmaceutical composition. The pharmaceutical composition comprises the following components: artemisinic acid, ampicillin sodium, ciprofloxacin and polysaccharide and probiotic microcapsules. According to the pharmaceutical composition disclosed by the invention, monomer traditional Chinese medicine effective components are selected to be combined with the antibiotics, so that the use amount of traditional Chinese medicines and antibiotics can be reduced on the premise of improving the antibacterial inhibition and killing effects, and the bioavailability and efficacy of medicines are improved. Meanwhile, immune enhancement regulation is taken as an auxiliary treatment means, polysaccharide and probiotics are selected to regulate intestinal flora of the diseased chickens and reconstruct a good microbial system, so that the immune function of the chickens is enhanced, and the production performance is improved. The pharmaceutical composition disclosed by the invention can be administrated through mixed feeding, is suitable for clinical application, has an exact curative effect and is suitable for being applied to intensive large-scale farms.
Owner:LANZHOU INST OF ANIMAL SCI & VETERINARY PHARMA OF CAAS
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