1-((Methylthio)methyl)ethyl acetate 74586-09-7 Acetyllactic acid thiomethyl ester EINECS 277-931-6 FEMA No. 3788 Methylthio 2-(acetyloxy)propionate Propanethioic acid, 2-(acetyloxy)-, S-methyl ester S-Methyl 2-(acetyloxy)propanethioate