68908-85-0 Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, chloride, reaction products with dimethylbenzenesulfonic acid-formaldehyde-4,4'-sulfonylbis(phenol) polymer Xanthylium, 9-(2-carboxyphenyl)-3,6-bis(diethylamino)-, chloride, with dimethylbenzenesulfonic acid-