Synonyms: C.I. AcidBlue 3, monosodium salt (8CI); Ethanaminium,N-[4-[[4-(diethylamino)phenyl](5-hydroxy-2,4-disulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-,hydroxide, inner salt, monosodium salt; Ethanaminium,N-[4-[[4-(diethylamino)phenyl](5-hydroxy-2,4-disulfophenyl)methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-,inner salt, monosodium salt (9CI); C.I. 42051:2; C.I. Food Blue 5:2; Food Blue5:2