Synonyms: Hydrogen (4-((4-(diethylamino)phenyl)(4-(ethyl(sulphonatobenzyl)amino)-o-tolyl)methylene)-3-methylcyclohexa-2,5-dien-1-ylidene)(ethyl)(sulphonatobenzyl)ammonium, sodium salt;Benzenemethanaminium, N-(4-((4-(diethylamino)phenyl)(4-(ethyl((sulfophenyl)methyl)amino)-2-methylphenyl)methylene)-3-methyl-2,5-cyclohexadien-1-ylidene)-N-ethyl-ar-sulfo-, hydroxide, inner salt, sodium salt