Synonyms: 12777-77-4;AC1L3UDJ;Benzenemethanaminium, N-(4-((5-hydroxy-2,4-disulfophenyl)(4-(((4-sulfophenyl)methyl)amino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, inner salt, disodium salt;disodium 4-[(E)-{(4E)-4-[benzyl(methyl)iminio]cyclohexa-2,5-dien-1-ylidene}{4-[(4-sulfonatobenzyl)amino]phenyl}methyl]-6-hydroxybenzene-1,3-disulfonate;disodium 4-[[4-[benzyl(methyl)azaniumylidene]cyclohexa-2,5-dien-1-ylidene]-[4-[(4-sulfonatophenyl)methylamino]phenyl]methyl]-6-hydroxybenzene-1,3-disulfonate