3-methyl-4-nitro-pyrazole-5-carboxylic aci 2-(p-chlorophenyl)hydrazide |
5-methyl-4-nitro-1h-pyrazole-3-carboxylic aci 2-(4-chlorophenyl)hydrazide |
3-methyl-4-nitropyrazole-5-carboxylic acid 2-(p-chlorophenyl)hydrazide |
3-methyl-4-nitro-pyrazole-5-carboxylic aci2-(p-chlorophenyl)hydrazide |