Patent ID: 8927572
Filing Date: 2015-01-06
Classification: A61K,A61P,C07D

Abstract:
1. A crystal form I of dihydrochloride salt of the compound (R)-2-[[7-(3-aminopiperidin-1-yl)-3,5-dimethyl-2-oxo-2,3-dihydro-1H-imidazo[4,5-b]pyridin-1-yl]methyl]benzonitrile represented by formula (1), wherein its characteristic peaks at 8.7±0.2°, 19.4±0.2°, 23.5±0.2° and 27.2±0.2° in X-ray powder diffraction indicated by an angle 2θ(°) using Cu—Kα irradiation,