Provided herein are impurities of imatinib, N-acetylpiperazine, N-acetylamino, N- chloromethylamino, formamide, 4-methylbenzamide and '2.24 RRt' impurities, and processes for the preparation and isolation thereof. Provided further herein is a highly pure imatinib or a pharmaceutically acceptable salt thereof substantially free of at least one, or two, or more, of the N-acetylpiperazine, N-acetylamino, N-chloromethylamino, formamide, 4-methylbenzamide, and '2.24 RRt' impurities, processes for the preparation, and pharmaceutical compositions comprising highly pure imatinib or a pharmaceutically acceptable salt thereof substantially free of impurities. Disclosed also herein is a process for preparing substantially pure α-form of imatinib mesylate.
本文提供
伊马替尼的杂质,包括N-乙酰
哌嗪,N-乙酰
氨基,N-
氯甲基
氨基,甲酰胺,4-甲基苯甲酰胺和'2.24 RRt'杂质,以及其制备和分离的方法。此外,本文还提供了一种高纯度的
伊马替尼或其在药用上可接受的盐,基本上不含N-乙酰
哌嗪,N-乙酰
氨基,N-
氯甲基
氨基,甲酰胺,4-甲基苯甲酰胺和'2.24 RRt'杂质中的至少一个、两个或更多个,以及制备的方法,以及包含高纯度
伊马替尼或其在药用上可接受的盐且基本上不含杂质的药物组合物。还公开了一种制备基本纯净的
伊马替尼甲酸盐α型的方法。