SEARCH Articles Figures Tables 2- -3-methylpyrazine oxidation 2- Isobutyl-5-methylpyrazine 4-oxide 2- Methylpyrazine 1-oxide 2-Chloro-3-isobutyl-6-methylpyrazine 2-Chloro-3-methylpyrazine 2-Chloro-3-methylpyrazine oxidation 2-Isobutyl-3-methylpyrazine 2-Methylpyrazine 3-Chloro-5-methylpyrazine 1-oxide Isobutyl Isobutyl oxide Methylpyrazines