1-Methyl-2-(2-(2-methyl-1H-indol-3-yl)-1-propenyl)naphtho(1,2-d)thiazolium, 4-methylbenzenesulfonic acid salt 62609-97-6 Naphtho(1,2-d)thiazolium, 1-methyl-2-(2-(2-methyl-1H-indol-3-yl)-1-propenyl)-, salt with 4-methylbenzenesulfonic acid (1:1)