1-Ethyl-2-(3-(1-ethylnaphtho(1,2-d)thiazol-2(1H)-ylidene)-2-methyl-1-propenyl)naphtho(1,2-d)thiazolium toluene-p-sulphonate 60485-76-9 7423-31-6 EINECS 262-257-7 Naphtho(1,2-d)thiazolium, 1-ethyl-2-(3-(1-ethylnaphtho(1,2-d)thiazol-2(1H)-ylidene)-2-methyl-1-propenyl)-, salt with 4-methylbenzenesulfonic acid (1:1)