Sodium 4-(2-(2-(2-chloro-3-(2-(3,3-dimethyl-1-(4-sulfonatobutyl)-3H-indolium-2-yl)vinyl)cyclohex-2-enylidene)ethylidene)-3,3-dimethylindolin-1-yl)butane-1-sulfonate

2-[2-[2-chloro-3-[2-[1,3-dihydro-3,3-dimethyl-1-(4-sulfobutyl)-2h-indol-2-ylidene]ethylidene]-1-cyclohexen-1-yl]ethenyl]-3,3-dimethyl-1-(4-sulfobutyl)-3h-indolium inner salt sodium salt ; 3,3-dimethyl-2-[2-[-chloro-3-[2-[1,3-dihydro-3,3-dimethyl-1-(4-sulfobutyl)-2h-indol 2-ylidene]-ethylidene]-1-cyclohexen-1-yl]ethenyl]-1-(4-sulfobutyl)-3h-indolium hydroxide, inner salt, monosodium salt ; 3,3-dimethyl-2-(2-chloro-3-(2-(1,3-dihydro-3,3-dimethyl-1-(4-sulfobutyl)-(2h)-indol-2-ylidene)ethylidene)-1-cyclohexen- ; ir-783 dye content 90 % ; ir-783 ; 2-[2-[2-chloro-3-[2-[1,3-dihydro-3,3-dimethyl-1-(4-sulfobutyl)-2h-indol-2-ylidene]-ethylidene]-1-cyclohexen-1-yl]-ethenyl]-3,3-dimethyl-1-(4-sulfobutyl)-3h-indolium hydroxide, inner salt sodium salt