3(2H)-Pyridazinone, 6-(5-amino-3-methyl-1H-pyrazol-1-yl)-, hydrazone 5-25-17-00459 (Beilstein Handbook Reference) 6-(5-Amino-3-methyl-1H-pyrazol-1-yl)-3(2H)-pyridazinone hydrazone 70589-18-3 BRN 0797125