3(2H)-Pyridazinone, 6-(2-(diethylamino)ethoxy)-, hydrazone, dihydrochloride 3-(2-Diethylaminoethoxy)-6-hydrazinopyridazine dihydrochloride 39807-32-4 6-(2-(Diethylamino)ethoxy)-3(2H)-pyridazinone hydrazone dihydrochloride