2,2-二甲基噻唑烷 以87 %的收率获得(疏基乙基)Ammonium 氢 酒石酸
参考文献:Process For The Preparation Of Cysteamine Bitartrate And Product So Obtained
标题:Process For The Preparation Of Cysteamine Bitartrate And Product So Obtained
摘要:The Present Invention Relates To A New,Enhanced Process For The Manufacture Of Cysteamine Bitartrate (I) And Of Its Key Intermediate Thiazolidine (II). Furthermore,It Relates To A New Processes For The Manufacture Of Crystalline Anhydrous Cysteamine Bitartrate (Polymorph L2) And Monohydrate Cysteamine Bitartrate (Polymorph L1). The Crystalline Anhydrous Cysteamine Bitartrate (Polymorph L2) So Obtained Is Characterized By Particularly Fine Particle Size And Good Appearance.