1-Ethyl-2-methylnaphtho(1,2-d)thiazolium 4-methylbenzene sulfonate 1-Ethyl-2-methylnaphtho(1,2-d)thiazolium toluene-p-sulphonate 42952-29-4 EINECS 256-017-0 Naphtho(1,2-d)thiazolium, 1-ethyl-2-methyl-, salt with 4-methylbenzenesulfonic acid (1:1)