Synonyms: 1-Ethyl-2-[3-(1-ethyl-2(1H)-quinolylidene)propenyl]quinoliniumchloride (6CI,7CI); Quinolinium,1-ethyl-2-[3-(1-ethyl-2(1H)-quinolinylidene)-1-propenyl]-, chloride (9CI);Quinolinium, 1-ethyl-2-[3-(1-ethyl-2(1H)-quinolylidene)propenyl]-, chloride(8CI); 1,1'-Diethyl-2,2'-carbocyanine chloride; 1,1'-Diethyl-2,2'-quinocarbocyaninechloride; Pinacyanol chloride; Quinaldine blue; Vernitest; Vernitest reagent