Patent ID: 9434715
Filing Date: 2016-09-06
CPC Classification: A61P,C07B,C07C,C07D,C30B

Claim Text:
1. A method of obtaining a purified pharmaceutically acceptable salt of a [5-(4,6-dimethyl-1H-benzoimidazol-2-yl)-4-methyl-pyrimidin-2-yl]-[3-(1-methyl-piperidin-4-yl)-propyl]-amine, comprising: forming a hemitartrate salt of the compound of formula (2): in water to yield an aqueous hemitartrate salt solution; seeding said aqueous solution with crystal seeds of the tetrahydrate of said hemitartrate to obtain a seeded aqueous solution; and crystallizing out of said seeded aqueous solution the solid tetrahydrate hemitartrate of formula (3):