Synonyms: Benzenesulfonic acid, 3,3'-(((4-(diethylamino)phenyl)methylene)bis((3-methyl-4,1-phenylene)(ethylimino)methylene))bis-;3,3'-(((4-(Diethylamino)phenyl)methylene)bis((3-methyl-4,1-phenylene)(ethylimino)methylene))bis(benzenesulphonic) acid;3,3'-{2-[4-(diethylamino)phenyl]-1,3-bis[(3,5-dimethylbenzyl)amino]propane-1,3-diyl}dibenzenesulfonic acid