Synonyms: 2-[2-[(3-Ethyl-5-phenyl-2-benzoxazolinylidene)methyl]-1-butenyl]-3-(3-sulfopropyl)benzothiazoliumhydroxide, inner salt (7CI); Benzothiazolium,2-[2-[(3-ethyl-5-phenyl-2-benzoxazolinylidene)methyl]-1-butenyl]-3-(3-sulfopropyl)-,hydroxide, inner salt (8CI); Benzoxazolium, 3-ethyl-2-[2-[[3-(3-sulfopropyl)-2(3H)-benzothiazolylidene]methyl]-1-butenyl]-5-phenyl-,hydroxide, inner salt; Benzoxazolium,3-ethyl-2-[2-[[3-(3-sulfopropyl)-2(3H)-benzothiazolylidene]methyl]-1-butenyl]-5-phenyl-,inner salt (9CI); Anhydro(3,3'-sulfopropyl-2-benzothiazole)(3-ethyl-5-phenyl-2-benzoxazole)-b-ethyltrimethinecyanine hydroxide