1-(3-Aminophenyl)-4,5-dihydro-5-oxo-1H-pyrazole-3-carboxylic acid 1-(m-Aminophenyl)-5-oxo-2-pyrazoline-3-carboxylic acid 1-(meta-Aminophenyl)-5-oxo-2-pyrazoline-3-carboxylic acid 1H-Pyrazole-3-carboxylic acid, 1-(3-aminophenyl)-4,5-dihydro-5-oxo- 2-Pyrazoline-3-carboxylic acid, 1-(m-aminophenyl)-5-oxo- (8CI) 89-26-9 EINECS 201-892-6 NSC 4987