Synonyms: 5,5’-Dichloro-3,3’-bis (3’-sulfopropyl)-9-ethylthiacarbocyanine, triethylammonium salt;5-Chloro-2-[2-[[5-chloro-3-(3-sulfopropyl)-2[3H]-benzothiazolylidene]methyl]-1-butenyl]-3- (3-sulfopropyl)benzothiazolium inner salt, triethylaminesalt;Benzothiazolium, 5-chloro-2-[2-[[5-chloro-3-(3-sulfopropyl)-2(3H)-benzothiazolylidene]methyl]-1-butenyl]-3- (3-sulfopropyl)-, inner salt, compd. with N,N-diethylethanamine;Benzothiazolium, 5-chloro-2-[2-[[5-chloro-3-(3-sulfopropyl)-2(3H)-benzothiazolylidene]methyl]-1-butenyl]-3-(3-sulfopropyl)-, hydroxide, inner salt, compd. with N,N-diethylethanamine;Benzothiazolium, 5-chloro-2-[2-[[5-chloro- 3-(3-sulfopropyl)-2(3H)-benzothiazolylidene]methyl ]-1-butenyl]-3-(3-sulfopropyl)-, hydroxide, inner salt, compd. with N,N-diethylethanamine (1:1)