PHARMACEUTICAL SALTS OF N-(2-(2-(DIMETHYLAMINO)ETHOXY)-4-METHOXY-5-((4-(1-METHYL-1H-INDOL-3-YL)PYRIMIDIN-2-YL)AMINO)PHENYL)ACRYLAMIDE AND CRYSTALLINE FORMS THEREOF
Crystalline forms of N-(2-(2-(dimethylamino)ethoxy)-4-methoxy-5-((4-(l-methyl-lH- indol-3-yl)pyrimidin-2-yl)amino)phenyl)acrylamide (1) and its pharmaceutically acceptable salts and compositions thereof useful for the treatment or prevention of diseases or medical conditions mediated through mutated forms of epidermal growth factor receptor (EGFR), such as various cancers, are disclosed.