The invention relates to polymorphous forms of (+)-(S)-clopidogrel hydrogen bromide, described as polymorphous “form A”, polymorphous “form B”, polymorphous “form C”, polymorphous “form D”, polymorphous “form E”, and polymorphous “form F”, in addition to polymorphous forms of (+)-(S)-clopidogrel napsylate, that are described as polymorphous “form A” and polymorphous “form B” and differ in the X-ray powder diffraction diagrams (XRPD) thereof. The invention also relates to the salts clopidogrel besylate, clopidogrel tosylate and clopidogrel oxalate, and to methods for the production thereof.
The formation of melt granulates comprising the drug clopidogrel of the following formula
or a pharmaceutically acceptable salt thereof markedly reduces degradation of clopidogrel and its salts on storage.
含有药物氯吡格雷或其药用可接受的盐的熔融颗粒的形成显著减少了氯吡格雷及其盐在储存过程中的降解。
PROCESSES FOR THE PREPARATION OF DIFFERENT FORMS OF (S)-(+)-CLOPIDOGREL BESYLATE
申请人:Lohray Braj Bhushan
公开号:US20090221827A1
公开(公告)日:2009-09-03
Disclosed herein are the improved processes for the preparation of different forms of (S)-(+)-Clopidogrel besylate, pharmaceutical compositions containing them and their use in medicine.
[EN] HIGHLY PURE SALTS OF CLOPIDOGREL FREE OF GENOTOXIC IMPURITIES<br/>[FR] SELS TRÈS PURS DE CLOPIDOGREL EXEMPTS D'IMPURETÉS GÉNOTOXIQUES
申请人:CADILA HEALTHCARE LTD
公开号:WO2012123958A1
公开(公告)日:2012-09-20
The present invention relates to substantially pure salts of clopidogrel of Formula (I) substantially free from genotoxic impurities. (I) wherein (S) represents a suitable organic or inorganic acid, which forms a salt with clopidogrel having less acidity.