CPC C07D 403/04 (2013.01) [A61K 31/506 (2013.01); A61K 47/02 (2013.01); A61K 47/10 (2013.01); A61K 47/38 (2013.01); C07B 2200/13 (2013.01)] | 13 Claims |
1. A method of treating a disease or disorder associated with one or more mutants of EGFR selected from the group consisting of L858R activating mutants L858R; delE746-A750; G719S; the Exon 19 deletion activating mutant; and the T790M resistance mutant, comprising administration of a therapeutically effective amount of a pharmaceutical formulation comprising a methanesulfonic acid salt of the compound of
![]() and one or more pharmaceutically acceptable excipients,
wherein
the methanesulfonic acid salt is in crystalline Form 2A having an X-ray powder diffraction pattern comprising the following 20 values measured using CuKα radiation: 1.6°±0.2°, 15.5°±0.2°, 17.9°±0.2°, 22.1°±0.2°, and 25.2°±0.2°, or
the methanesulfonic acid salt is in crystalline Form 2B having an X-ray powder diffraction pattern comprising the following 20 values measured using CuKα radiation: 1.8°±0.2°, 15.7°±0.2°, 18.2°±0.2°, 20.3°±0.2°.
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