Synonyms: Naphtho(1,2-d)thiazolium, 2-(3-(5,6-dichloro-1-ethyl-1,3-dihydro-3-(3-sulfobutyl)-2H-benzimidazol-2-ylidene)-1-propen-1-yl)-1-(3-sulfopropyl)-, inner salt, compd. with N,N-diethylethanamine (1:1);Naphtho(1,2-d)thiazolium, 2-(3-(5,6-dichloro-1-ethyl-1,3-dihydro-3-(3-sulfobutyl)-2H-benzimidazol-2-ylidene)-1-propenyl)-1-(3-sulfopropyl)-, hydroxide, inner salt, compd. with N,N-diethylethanamine (1:1);Naphtho(1,2-d)thiazolium, 2-(3-(5,6-dichloro-1-ethyl-1,3-dihydro-3-(3-sulfobutyl)-2H-benzimidazol-2-ylidene)-1-propenyl)-1-(3-sulfopropyl)-, inner salt, compd. with N,N-diethylethanamine (1:1);3-(2-{(1E,3E)-3-[5,6-dichloro-1-ethyl-3-(3-sulfobutyl)-1,3-dihydro-2H-benzimidazol-2-ylidene]prop-1-en-1-yl}naphtho[1,2-d][1,3]thiazol-1-ium-1-yl)propane-1-sulfonate - N,N-diethylethanamine (1:1)