SEARCH Articles Figures Tables 2- -3-methylpyrazine oxidation 2- Methylpyrazine 1-oxide 2-Amino- -chlorid 2-Amino-3-cyano-6-methylpyrazine 1-oxide 2-Amino-3-methylpyrazine chloride 2-Amino-5- -3-methylpyrazine 1-oxide 2-Cyano-3-methylpyrazine 2-Methylpyrazine 3- Amino-2- -5-methylpyrazine Amino oxidation Methylpyrazines Oxidation chloride Oxide chlorides