The molecule is an anionic unsymmetrical C7 cyanine dye having differentially substituted indoleinine groups at each end. It has a role as a fluorochrome. It is an organosulfonate oxoanion, an indolium ion and a cyanine dye.
(2E)-3-ethyl-2-[(2E,4E,6E)-7-[5-[(2-iodoacetyl)amino]-1,3,3-trimethylindol-1-ium-2-yl]hepta-2,4,6-trienylidene]-1,1-dimethylbenzo[e]indole-6,8-disulfonate