Synonyms: 1H-Benz[e]indolium,2-[5-(1,3-dihydro-1,1,3-trimethyl-2H-benz[e]indol-2-ylidene)-1,3-pentadienyl]-1,1,3-trimethyl-,iodide (9CI);1,1',3,3,3',3'-Hexamethyl-4,4',5,5'-dibenzoindodicarbocyanineiodide;1,3,3,1',3',3'-Hexamethyl-4,5,4',5'-dibenzoindodicarbocyanine iodide;IR 676 iodide;NK 3375;PD 686;