The molecule is a cyanine dye and an organic potassium salt. It has a role as a fluorochrome. It contains a NIR-4(2-).
dipotassium;(2Z)-2-[(2E,4E)-5-[5-carboxy-3,3-dimethyl-1-(4-sulfonatobutyl)indol-1-ium-2-yl]penta-2,4-dienylidene]-3,3-dimethyl-1-(4-sulfonatobutyl)indole-5-sulfonate