PROCESS FOR THE PREPARATION OF SUBSTITUTED QUINOXALINES
申请人:Narasimha Rao Mahendranath Rao
公开号:US20120277433A1
公开(公告)日:2012-11-01
The present invention is directed to an improved process for the preparation of substituted quinoxalines by cyclization of the corresponding dianiline in the presence of ion exchange resin.
PROCESSES FOR PURIFYING VARENICLINE L-TARTRATE SALT AND PREPARING CRYSTALLINE FORMS OF VARENICLINE L-TARTRATE SALT
申请人:Lifshitz-Liron Revital
公开号:US20100010221A1
公开(公告)日:2010-01-14
Processes for purifying Varenicline base or the L-tartrate salt thereof and for preparing Varenicline L-tartrate crystalline forms A and B are provided.
AMORPHOUS VARENICLINE TARTRATE AND PROCESS FOR THE PREPARATION THEREOF
申请人:Khan Mubeen Ahmed
公开号:US20090318460A1
公开(公告)日:2009-12-24
The present invention generally relates to an amorphous form of varenicline and its pharmaceutically acceptable salts thereof. More particularly the present invention relates to amorphous forms of varenicline and its L-tartrate salt; a process for their preparation and pharmaceutical compositions comprising the same.