The molecule is an anionic unsymmetrical C7 cyanine dye having substituted indoleinine and benzo[e]indoleinine groups at either end. It has a role as a fluorochrome. It is a cyanine dye and an organosulfonate oxoanion.
(2Z)-2-[(2E,4E,6E)-7-[5-carboxy-3,3-dimethyl-1-(4-sulfonatobutyl)indol-1-ium-2-yl]hepta-2,4,6-trienylidene]-3-ethyl-1,1-dimethylbenzo[e]indole-6,8-disulfonate