DEO KESHAV,DEO KESHAV,DESHMUKH RAJENDRA DAGADU,DESHMUKH RAJENDRA DAGADU,NITIN GUPTA,NITIN GUPTA
申请号：
IN2773/MUM/2013
公开号：
IN2013MU02773A
申请日:
2013.08.26
申请国别(地区):
IN
年份:
2015
代理人:
摘要：
The present invention relates to a process for preparing impurity of Esomeprazole or its pharmaceutically acceptable salt, for example, N-methyl esomeprazole of Formula IIa and IIb, which is useful as reference marker or a key intermediate to quantify its presence in Esomeprazole. Formula IIa Formula IIb
