An object of the present invention is to provide a compound and pharmaceutical composition showing superior stability and/or solubility, etc. and having superior FLT3 inhibitory activity. The present invention provides a salt of (S,E)-N-(1-((5-(2-((4-cyanophenyl)amino)-4-(propylamino)pyrimidin-5-yl)pent-4-yn-1-yl)amino)-1-oxopropan-2-yl)-4-(dimethylamino)-N-methylbut-2-enamide, or a crystal thereof. Since the salt or a crystal thereof has superior FLT3 inhibitory activity and shows superior physicochemical properties as drugs, such as storage stability, solubility, and so forth, it is useful for treatments of diseases or conditions relating to FLT3. The present invention also provides a pharmaceutical composition and FLT3 inhibitor containing the salt or a crystal thereof.
本发明的一个目的是提供一种化合物和药物组合物,具有优越的稳定性和/或溶解性等,并具有优越的FLT3抑制活性。本发明提供了(S,E)-N-(1-((5-(2-((4-
氰苯基)
氨基)-4-(丙基
氨基)
嘧啶-5-基)戊-4-炔-1-基)
氨基)-1-氧代
丙烷-2-基)-4-(
二甲氨基)-N-甲基丁-2-烯酰胺的盐,或其晶体。由于该盐或其晶体具有优越的FLT3抑制活性,并且作为药物具有优越的物理
化学性质,如储存稳定性、溶解性等,因此对于治疗与FLT3相关的疾病或症状是有用的。本发明还提供了含有该盐或其晶体的药物组合物和FLT3
抑制剂。