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148results about How to "Does not cause allergic reactions" patented technology

Method for synthesizing polysorbate-80 for injection

The invention provides a method for synthesizing polysorbate-80 for injection, comprising the following steps: (1) taking sorbierite as a raw material, partially dehydrating the sorbierite under the conditions of an acid catalyst and a vacuum state, and carrying out crystallization and purification for three times on the dehydrated sorbierite to obtain primary high-purity dehydrated sorbierite II; (2) further dehydrating the high-purity primary dehydrated sorbierite II and then carrying out reduced pressure distillation and purification to obtain secondary high-purity dehydrated sorbierite III; (3) mixing the high-purity primary dehydrated sorbierite II with the high-purity secondary dehydrated sorbierite III in proportion to obtain high-purity dehydrated sorbierite IV; carrying out addition polymerization on the high-purity dehydrated sorbierite IV under the condition of a basic catalyst and ethylene oxide to obtain dehydrated sorbierite polyoxyethylene ether V; and (4) reacting the dehydrated sorbierite polyoxyethylene ether V with high-purity oleic acid under the action of an esterification catalyst and then refining the reactant of the dehydrated sorbierite polyoxyethylene ether V and the high-purity oleic acid to obtain the polysorbate-80 for injection. The liquid chromatogram (LC) of the polysorbate-80 for injection has two principal product peaks without other impurity peaks; and compared with the conventional craft products, the polysorbate-80 for injection is higher in purity, more stable in the technology, is controllable, meets the injection requirements in quality and has more reliable safety in clinical application.
Owner:南京威尔药业科技有限公司

Freeze-dried voriconazole micelle preparation and preparation method thereof

The invention discloses a freeze-dried voriconazole micelle preparation and a preparation method thereof. The freeze-dried voriconazole micelle preparation consists of the following components in part by weight: 1 part of voriconazole, 2 to 10 parts of cholate, 1.5 to 5 parts of phospholipid, and 1 to 10 parts of freeze-drying supporting agent. According to the preparation, the dissolubility of the voriconazole is increased, and the dissolution degree of the voriconazole in water is improved; and the preparation can be diluted into intravenous injection by using injection water for clinical use. The particle diameter of the prepared voriconazole micelles is between 10 and 100 nanometers, the particle diameter of most micelles is about 20 nanometers, the particle size is uniform, the frozen and dried voriconazole micelles are high in re-dissolution speed, a transparent and colorless solution is formed after the voriconazole micelles are re-dissolved, and the particle diameter has no obvious change, so the safety of clinical application is enhanced. According to the prepared freeze-dried voriconazole micelle preparation, because the voriconazole is wrapped inside by the mixed micelles, influence of light, heat and moisture is avoided, and the stability of the voriconazole in a long-term storage process is improved.
Owner:JINAN KANGHE MEDICAL TECH

Houttuynia cordata scalding spray film agent and preparation method thereof

The invention discloses a houttuynia cordata scalding spray film agent and a preparation method thereof. The houttuynia cordata scalding spray film agent is characterized by comprising, by weight, 75-100 parts of houttuynia cordata mixing leach liquid, 3-5 parts of borneol and 50 parts of polyvinylpyrrolidone. The preparation method of the houttuynia cordata scalding spray film agent is characterized by including the following processing steps that (1) leach liquid is prepared; (2) 50-part polyvinylpyrrolidone is weighed, the polyvinylpyrrolidone is added into the houttuynia cordata mixing leach liquid, and even stirring is carried out; (3) after the borneol with the parts by weight being 3-5 parts is dissolved by ethyl alcohol, the mixed liquid is added into the solution obtained in the step (2), even mixing is conducted, and the houttuynia cordata scalding spray film agent is obtained. According to the houttuynia cordata scalding spray film agent and the preparation method thereof, the method is simple and convenient, the houttuynia cordata scalding spray film agent obtained through preparation can be used for treatment of burning and scalding quickly and effectively, skin allergy is avoided, toxic reaction can not occur to skin, stability is good, and production cost is low.
Owner:CHONGQING NORMAL UNIVERSITY

Vinpocetine transdermal patch and preparation method thereof

The invention relates to a vinpocetine-contained transdermal patch and a preparation method thereof. The vinpocetine transdermal patch comprises five layers of a protecting layer, an adhesive layer, a release controlling film layer, a medicament reservoir and a back lining layer; the medicament reservoir contains 1-10 percent of vinpocetine or pharmaceutically acceptable salt of vinpocetine, 0-40percent of transdermal accelerating agent, a pH adjusting agent and the balance of reservoir substrate; the adhesive layer contains 0-8 percent of vinpocetine or pharmaceutically acceptable salt of vinpocetine, 0-40 percent of transdermal accelerating agent, a pH adjusting agent and the balance of pressure-sensitive adhesive; and pH values of the medicament reservoir and the adhesive layer are between 3.5 and 6.5. The invention solves the problems of less drug-loading amount, difficult formation of higher medicament concentration gradient and lower transmission rate of the traditional transdermal preparation by adopting a new preparation technology, has good transdermal effect and continuously releases medicaments for 1-7 days; and animal in-vivo tests show that the vinpocetine-contained transdermal patch has no simulating performance and sensitizing performance on skin.
Owner:HANGZHOU MINSHENG PHARM CO LTD
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