PROCESS FOR THE PREPARATION OF ALPHA FORM OF IMATINIB MESYLATE

摘要

The present invention provides an improved process for the preparation of alpha form of imatinib mesylate with (long needle) andα-crystal form (small needle) in a consistent manner and novel alpha crystal forms of imatinib mesylate. The present invention in particular provides a reproducible and efficient process. In particular the present invention provides a efficient process which gives higher yields and consistent results.