3(2H)-Pyridazinone, 6-butoxy-4-((3-(dimethylamino)propyl)amino)-2-phenyl-, hydrochloride, hydrate (2:2:1) 6-Butoxy-4-((3-(dimethylamino)propyl)amino)-2-phenyl-3(2H)-pyridazinone hydrochloride 1/2H2O UR6141000