SEARCH Articles Figures Tables 2- Methoxy-3,5-dimethylpyrazine oxidation 2-Chloro-5-methoxy-3,6-dimethylpyrazine 2-Hydroxy-3-methoxy-5,6-dimethylpyrazine 2-Hydroxy-5-methoxy-3,6-dimethylpyrazine 1,4-dioxide 2-Methoxy-3,6-dimethylpyrazine 4-oxide