Salt of pyridinyl amino pyrimidine derivative, preparation method therefor, and application thereof

Abstract

A mesylate salt of the compound of formula (I), the preparation method thereof, a pharmaceutical composition containing said salt and the use of said salt in treating diseases mediated by activating and resistance mutations of EGFR, in particular cancers, in mammal, in particular human. The mesylate salt of the compound of formula (I) has a high bioavailability in animal, and can remarkably inhibit the growth of transplanted tumors in animal and show a good safety.

Dependencies are inferred from the claim text.