申请人:Rahul Saxena
公开号:US20090099363A1
公开(公告)日:2009-04-16
The present invention relates to a novel process for the preparation of polymorphic forms of clopidogrel hydrogen sulfate, namely methyl(+)-(S)-α-(o-chlorophenyl)-6,7-dihydrothieno[3,2-c]pyridine-5(4H)-acetate hydrogen sulfate of formula (I). Particularly the present invention relates to the process for the preparation of form (I) and amorphous clopidogrel hydrogen sulfate.
本发明涉及一种新型制备氯吡格雷硫酸氢盐多形态的方法,即甲基(+)-(S)-α-(邻氯苯基)-6,7-二氢噻吩[3,2-c]吡啶-5(4H)-乙酸氢盐的制备方法,化学式为(I)。特别是本发明涉及制备(I)型和非晶态氯吡格雷硫酸氢盐的方法。