2-METHOXYL-3-METHYLPYRAZINE; 2-METHOXY-3-METHYLPYRAZINE AND 2-METHOXY-5-METHYLPYRAZINE; 2-METHOXY-3(5/6)-METHYL PYRAZINE; 2-METHOXY-3(5)-METHYLPYRAZINE; 2-METHYL-3-METHOXYPYRAZINE; 2-METHYL-3(5/6)-METHOXYPYRAZINE; 2-METHYL-6-METHOXYPYRAZINE; 2 OR 5 OR 6-METHOXY-3-METHYLPYRAZINE;