Patent ID: 7541478

Claim:
A compound selected from the group consisting of monocalcium bis((2E)-3-[3-[7-chloro-3-(2-[[4-fluoro-2-(trifluoromethyl)phenyl]amino]-2-oxoethyl)-6-methyl-2-oxo-2H-chromen-4-yl]phenyl]acrylate) and (2E)-3-[3-[7-chloro-3-(2-[[4-fluoro-2-(trifluoromethyl)phenyl]amino]-2-oxoethyl)-6-methyl-2-oxo-2H-chromen-4-yl]phenyl]acrylate tris(hydroxymethyl)methylamine salt, or a hydrate thereof, with the hydration number in the range of monohydrate to tetrahydrate.