Synonyms: Benzoxazolium,5-chloro-2-[2-[[5-chloro-3-(3-sulfopropyl)-2(3H)-benzoxazolylidene]methyl]-1-butenyl]-3-(3-sulfopropyl)-,hydroxide, inner salt, sodium salt; Benzoxazolium,5-chloro-2-[2-[[5-chloro-3-(3-sulfopropyl)-2(3H)-benzoxazolylidene]methyl]-1-butenyl]-3-(3-sulfopropyl)-,inner salt, sodium salt (9CI); Benzoxazolium,5-chloro-2-[2-[[5-chloro-3-(3-sulfopropyl)-2-benzoxazolinylidene]methyl]-1-butenyl]-3-(3-sulfopropyl)-,hydroxide, inner salt, sodium salt (8CI); 5,5'-Dichloro-9-ethyl-3,3'-di(3-sulfopropyl)oxacarbocyaninesodium salt;Anhydro-5,5'-dichloro-9-ethyl-3,3'-bis(3-sulfopropyl)oxycarbocyanine hydroxidesodium salt;Anhydro-5,5'-dichloro-9-ethyl-3,3'-di(3-sulfopropyl)oxacarbocyanine hydroxidesodium salt