The molecule is a cyanine dye and an organic potassium salt. It has a role as a fluorochrome. It contains a SNIR4(2-).
dipotassium;(2E)-2-[(2E,4E,6E)-7-[5-[(2-iodoacetyl)amino]-1,3,3-trimethylindol-1-ium-2-yl]hepta-2,4,6-trienylidene]-1,1-dimethyl-3-(2-sulfonatoethyl)benzo[e]indole-6,8-disulfonate