1H-Pyrazole-3-carboxylic acid, 5-methyl-4-nitro-, 2-(4-chlorophenyl)hydrazide 3-Methyl-4-nitropyrazole-5-carboxylic acid 2-(p-chlorophenyl)hydrazide 86831-69-8 Pyrazole-5-carboxylic acid, 3-methyl-4-nitro-, 2-(p-chlorophenyl)hydrazide