3-Ethyl-2-methylbenzoxazole-3-ium·p-toluenesulfonate 2-Methyl-3-ethylbenzoxazolium p-toluenesulfonate Benzoxazolium, 3-ethyl-2-methyl-, 4-methylbenzenesulfonate (1:1) Benzoxazolium, 3-ethyl-2-methyl-, salt with 4-methylbenzenesulfonic acid (1:1) Einecs 262-069-5 3-ethyl-2-methylbenzoxazolium p-toluenesulphonate