3(2H)-Pyridazinone, 6-((1-methylethyl)amino)-, hydrazone, dihydrochloride 3-Hydrazino-6-isopropylaminopyridazine dihydrochloride 56393-14-7 6-((1-Methylethyl)amino)-3(2H)-pyridazinone hydrazone dihydrochloride Pyridazine, 3-hydrazino-6-isopropylamino-, dihydrochloride