1H-Pyrazole-4-carbonitrile, 5-amino-1-(6-hydrazino-3-pyridazinyl)-3-methyl- 5-25-17-00459 (Beilstein Handbook Reference) 5-Amino-1-(6-hydrazino-3-pyridazinyl)-3-methyl-1H-pyrazole-4-carbonitrile 69720-60-1 BRN 0891074