5-Methyl-4-nitro-2H-pyrazole-3-carboxylic acid N'-(2-chloro-phenyl)-hydrazide
o-chlorophenylhydrazine hydrochloride
2,7-dimethyl-3,8-dinitrodipyrazolo[1,5-a;1',5'-d]pyrazine-4,9-dione
4-Amino-5-methyl-2H-pyrazole-3-carboxylic acid N'-(2-chloro-phenyl)-hydrazide
formamide