2-Methyl-4-nitro-2H-pyrazole-3-carboxylic acid;1-methyl-4-nitropyrazole-5-carboxylic acid;1-Methyl-4-nitro-1H-pyrazole-5-carboxylic acid;1H-Pyrazole-5-carboxylic acid,1-methyl-4-nitro;1-methyl-4-nitro-5-pyrazolecarboxylic acid;
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