The molecule is a cationic C3 cyanine dye having quinolin-2-yl units at each end. It has a role as a fluorochrome. It is a cyanine dye and a quinolinium ion.
(2E)-1-ethyl-2-[(E)-3-(1-ethylquinolin-1-ium-2-yl)prop-2-enylidene]quinoline