Synonyms: 1-Ethyl-2-[3-(1-ethyl-3,3-dimethyl-2-indolinylidene)propenyl]-3,3-dimethyl-3H-indoliumiodide (6CI,7CI); 3H-Indolium,1-ethyl-2-[3-(1-ethyl-1,3-dihydro-3,3-dimethyl-2H-indol-2-ylidene)-1-propenyl]-3,3-dimethyl-,iodide (9CI); 3H-Indolium, 1-ethyl-2-[3-(1-ethyl-3,3-dimethyl-2-indolinylidene)propenyl]-3,3-dimethyl-,iodide (8CI); 1,1'-Diethyl-3,3,3',3'-tetramethylindocarbocyanine iodide;Astrophloxin; Astrophloxine; SNC 2; SNC 2 (dye)