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    • 4. 发明申请
    • METHOD FOR PREPARATION OF PHARMACEUTICAL-GRADE DITHIOCARBAMATE
    • 制备药物级二氢碳酸酯的方法
    • WO0048463A9
    • 2001-11-01
    • PCT/US0003994
    • 2000-02-16
    • MEDINOX INCVASSILEV VASSIL PLIAW WEI CHENGLAI CHING SAN
    • VASSILEV VASSIL PLIAW WEI-CHENGLAI CHING-SAN
    • A61K31/325C07C333/16A01N47/10C07C333/00
    • C07C333/16
    • The present invention provides methods for producing pharmaceutical-grade particulate dithiocarbamates from secondary amines by vigorously contacting at least one secondary amine and a pharmaceutically acceptable diluent that is a solvent for the carbon disulfide, but not for the secondary amine in an inert gas atmosphere, cooling the mixture so as to precipitate the dithiocarbamate therefrom, and separating the precipitated dithiocarbamate from the cooled mixture. The preferred solvent contains absolute ethanol. In alternative embodiments, the invention further provides methods for purifying a dithiocarbamate to obtain a pharmaceutical-grade dithiocarbamate particulate from a dithiocarbamate feed and methods for producing a sterile pharmaceutical-grade dithiocarbamate from a dithiocarbamate feed.
    • 本发明提供了通过与惰性气体气氛中的至少一种仲胺和作为二硫化碳的溶剂而不是仲胺的药学上可接受的稀释剂剧烈接触来从仲胺生产药物级颗粒二硫代氨基甲酸盐的方法,冷却 混合物以从其中沉淀二硫代氨基甲酸盐,并将沉淀的二硫代氨基甲酸盐与冷却的混合物分离。 优选的溶剂含有无水乙醇。 在替代实施方案中,本发明还提供了用于纯化二硫代氨基甲酸盐以从二硫代氨基甲酸盐进料获得药物级二硫代氨基甲酸盐颗粒的方法和从二硫代氨基甲酸盐进料生产无菌药用二硫代氨基甲酸盐的方法。