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4-nitro-5-propyl-1H-pyrazole-3-carboxylic acid 5-chloro-2-ethoxybenzoic acid 4-Nitro-3-propyl-1H-pyrazole-5-carboxamide 2-Ethoxybenzoyl chloride 1-METHYL-4-NITRO-1H-PYRAZOLE-5-CARBOXAMIDE 1-METHYL-3-(2-METHYLPROPYL)-1H-PYRAZOLE-5-CARBOXYLIC ACID Homo Sildenafil 4-AMINO-1-METHYL-5-PROPYL-1H-PYRAZOLE-3-CARBOXYLIC ACID AMIDE 4-BROMO-1-METHYL-3-PROPYL-1H-PYRAZOLE-5-CARBOXYLIC ACID