4-(5,6,7,8-TETRAHYDROIMIDAZO(1,5-A)PYRIDIN-5-YL)-BENZONITRILE HYDROCHLORIDE IN CRYSTALLINE FORM CHARACTERIZED BY AN X-RAY DIAGRAM, A PROCESS FOR THE PREPARATION THEREOF AND A PHARMACEUTICAL PREPARATION COMPRISING SAID CRYSTALLINE HEMIHYDRATE FORM

摘要

The present invention relates to a crystalline form of 4- (5,6,7,8-tetrahydroimidazo [1,5-a] pyridin-5-yl) -benzonitrile hydrochloride of formula (Ia) containing crystal water and its It relates to a manufacturing method. The crystalline form shows excellent storage stability.