Synonyms: 1-Ethyl-2-[7-(1-ethyl-3,3-dimethyl-2-indolinylidene)-1,3,5-heptatrienyl]-3,3-dimethyl-3H-indoliumiodide (7CI); 3H-Indolium,1-ethyl-2-[7-(1-ethyl-1,3-dihydro-3,3-dimethyl-2H-indol-2-ylidene)-1,3,5-heptatrienyl]-3,3-dimethyl-,iodide (9CI); 3H-Indolium, 1-ethyl-2-[7-(1-ethyl-3,3-dimethyl-2-indolinylidene)-1,3,5-heptatrienyl]-3,3-dimethyl-,iodide (8CI); Indotricarbocyanine iodide,1,1',3,3'-tetramethyl-; NK 1414