7423-31-6 Carbocyanin DBTC DBTC NSC290437 Naphtho[1,2-d]thiazolium, 1-ethyl-2-[3-(1-ethylnaphtho[1,2-d]thiazol-2(1H)-ylidene)-2-methyl-1-propenyl]-, bromide Naphtho[1,2-d]thiazolium, 1-ethyl-2-[3-(1-ethylnaphtho[1,2-d]thiazolin-2-ylidene)-2-methylpropenyl]-, bromide Stains-all