英文别名2-Methyl-4-nitro-5-propyl-2H-pyrazole-3-carboxylic acid; 1-Methyl-4-nitro-3-propyl-1H-pyrazole; 1-Methyl-2-nitro-3-propyl-1H-pyrazole-5-carboxylic acid; Methisosildenafil Impurity 15; Sildenafil Impurity NA; 1-methyl-4-nitro-3-n-propyl pyrazole-5-carboxylic acid; 1H-Pyrazole-5-carboxylicacid,1-methyl-4-nitro-3-propyl; 1-methyl-4-nitro-3-propyl-1H-5-pyrazole carboxylic acid; 1-methyl-4-nitro-3-n-propyl-1H-pyrazol-5-carboxylic acid; 1-methyl-4-nitro-3-propyl-1H-pyrazole-5-carboxylic; PYR245 
