2-Ethyl-(or methyl)-(3,5 or 6)-methoxypyrazine 2-Ethyl-5(or 6)-methoxypyrazine 2-Ethyl-5(or6)-methoxypyrazine 68739-00-4 EINECS 272-125-0 FEMA No. 3280 Pyrazine, 2-ethyl-5(or 6)-methoxy-