The invention relates to a crystalline form of 6-(difluoromethyl)-8- [(1R,2R)-2-hydroxy-2-methylcyclopentyl]-2-[1-(methylsulfonyl) piperidin-4-yl]amino}pyrido[2,3-d]pyrimidin-7(8H)-one (PF-06873600) free base (Form 1). The invention also relates to pharmaceutical compositions comprising this crystalline form and to methods of using the crystalline form and such compositions for the treatment of abnormal cell growth, such as cancer, in a mammal. Formula (I):
本发明涉及一种6-(二
氟甲基)-8-[(1R,2R)-2-羟基-2-甲基环戊基]-2-[1-(甲磺酰基)
哌啶-4-基]
氨基}
吡啶[2,3-d]
嘧啶-7(8H)-酮(PF-06873600)游离碱(形式1)的晶体形式。本发明还涉及包含该晶体形式的制药组合物,以及使用该晶体形式和这样的组合物治疗哺乳动物的异常细胞生长,如癌症的方法。公式(I):