Synonyms: Phenolphthalein,3',3''-bis[[bis(carboxymethyl)amino]methyl]-5',5''-dimethyl- (6CI,7CI,8CI);3,3'-Bis[N,N-bis(carboxymethyl)aminomethyl]-o-cresolphthalein;3,3'-Bis[N,N-di(carboxymethyl)aminomethyl]-o-cresolphthalein;Cresolphthaleincomplexon;Cresolphthalexon;NSC 298195;Phthalein complexone;o-Cresolphthalexon;o-Cresolphthalexone;