Patent ID: 7030241

Claim:
A methane sulfonic acid salt of a compound of formula (1) wherein: X is a group of formula (4) wherein A is a heterocyclic group having from 5 to 7 ring atoms, wherein the ring atoms comprise from 1–3 heteroatoms independently chosen from O, N, and S; R 1 is chosen from hydrogen and fluoro; and R 2 is chosen from hydrogen, C 1-4 alkyl, C 1-4 alkoxy, and an oxo group; Y is chosen from methyl, ethyl, ethyl substituted with at least one fluorine atom, C 3-7 cycloalkyl methyl which is optionally substituted with at least one fluorine atom, and a group of formula (5) wherein Z is chosen from hydrogen; phenyl; phenyl substituted with 1–3 substituents independently chosen from hydroxy, C 1-4 alkyl, C 1-4 alkoxy, and cyano; and R 3 is chosen from hydrogen or 1–3 substituents independently chosen from halogen, hydroxy, C 1-4 alkyl, and C 1-4 alkoxy.