This invention relates to polymorphs of (R)-3-[1-(2,6-Dichloro-3-fluoro-phenyl)-ethoxy]-5-(1-piperidin-4-yl-1H-pyrazol-4-yl)-pyridin-2-ylamine that are useful in the treatment of abnormal cell growth, such as cancer, in mammals. This invention also relates to compositions including such salts and polymorphs, and to methods of using such compositions in the treatment of abnormal cell growth in mammals, especially humans.本發明係關於一種可有效用於治療哺乳動物之異常細胞生長如癌症之(R)－3－[1－(2,6－二氯－3－氟苯基)乙氧基]－5－(1－哌啶－4－基－1H－吡唑－4－基)－吡啶－2－基胺的多晶型。此發明亦係關於含其鹽類和多晶型的組成物，以及利用此類組成物於治療哺乳動物特別指人類之異常細胞生長的方法。
