The molecule is a cyanine dye and an organic potassium salt. It has a role as a fluorochrome. It contains a SNIR1(1-).
potassium;(2E)-3-ethyl-2-[(2E,4E)-5-[5-[(2-iodoacetyl)amino]-1,3,3-trimethylindol-1-ium-2-yl]penta-2,4-dienylidene]-1,1-dimethylbenzo[e]indole-6,8-disulfonate