Patent ID: 8481727
Filing Date: 2013-07-09
Classification: A61P,C07D

Abstract:
1. An A-form crystal of 4-bromo-6-(3-(4-chlorophenyl)propoxy)-5-(pyridin-3-ylmethylamino)pyridazin-3(2H)-one mono-hydrochloride of formula (1), which has characteristic peaks at diffraction angles (2θ) of 8.24, 11.24, 11.76, 16.48, 17.16, 17.80, 18.24, 19.80, 21.64, 22.56, 22.96, 23.68, 24.52, 25.92, 26.32, 27.12, 27.40, 28.00, 28.64, 29.28, 31.84 and 34.80° in its powder X-ray diffraction pattern.