The method of pharmaceutically useful 4- (5,6,7,8-tetrahydro-imidazo / 1,5-a / pyridin-5-yl) -benzonitrile hydrochloride in crystalline hemihydrate

摘要

The invention relates to a novel crystalline form, containing water of crystallization, of 4-(5,6,7,8-tetrahydroimidazol[1,5-a] pyridin-5-yl)-benzonitrile hydrochloride of formula Ia IMAGE (Ia) and to a process for the preparation thereof. The novel crystalline form is distinguished by excellent storage stability.