Synonyms: Naphtho[2,1-d]thiazolium,2-[3-chloro-5-(3-ethylnaphtho[2,1-d]thiazol-2(3H)-ylidene)-1,3-pentadienyl]-3-ethyl-,iodide (9CI); Naphtho[2,1-d]thiazolium,2-[3-chloro-5-(3-ethylnaphtho[2,1-d]thiazolin-2-ylidene)-1,3-pentadienyl]-3-ethyl-,iodide (8CI); 3,3'-Diethyl-10-chloro-2,2'-(6,6',7,7'-dibenzo)thiadicarbocyanineiodide; 3,3'-Diethyl-10-chloro-2,2'-(6,7,6',7'-dibenzo)thiadicarbocyanineiodide; NK 463