2-Pyrazoline-3-carboxylicacid, 5-oxo-1-phenyl- (6CI,8CI);1-Phenyl-5-pyrazolone-3-carboxylicacid;3-Carboxy-1-phenyl-2-pyrazolin-5-one;3-Carboxy-1-phenyl-5-pyrazolone;5-Oxo-1-phenyl-4,5-dihydro-1H-pyrazole-3-carboxylic acid;1-Phenyl-3-carboxy-5-pyrazolone;
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