3-Ethyl-4,5-dihydro-5-(3-methylthiazolidin-2-ylidene)-2-(methylthio)-4-oxothiazolium toluene-p-sulphonate 63870-47-3 EINECS 264-535-3 Thiazolium, 3-ethyl-4,5-dihydro-5-(3-methyl-2-thiazolidinylidene)-2-(methylthio)-4-oxo-, salt with 4-methylbenzenesulfonic acid (1:1)