The present invention provides an improved process for the preparation of alpha form of imatinib mesylate with (long needle) and α- 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.
本发明提供了一种改进的工艺,以一致的方式制备
伊马替尼甲磺酸盐的α型晶体(长针)和α-晶体形式(小针),并提供了
伊马替尼甲磺酸盐的新型α晶体形式。本发明特别提供了一种可重复和高效的工艺。特别是本发明提供了一种高产率和一致结果的高效工艺。