3(2H)-Pyridazinone, 6-(5-amino-1H-pyrazol-1-yl)-, hydrazone 3-Hydrazino-6-(5-amino-1-pyrazolyl)pyridazine 6-(5-Amino-1H-pyrazol-1-yl)-3(2H)-pyridazinone hydrazone 70606-82-5