(Methylthio)methylpyrazine 2-Methyl-(3,5 or 6)-methylthiopyrazine 2-Methyl-3(or5)-(methylthio)pyrazine 68378-12-1 EINECS 269-880-3 FEMA 3208 Pyrazine, 2-methyl-(3,5 or 6)-methylthio- Pyrazine, 2-methyl-3(or 5)-(methylthio)-