SEARCH Articles Figures Tables 2- Chloro-3,6-dimethylpyrazin-4-oxide 2-Chloro-3,6-dimethylpyrazine 1.4- dioxide 2-Chloro-3,6-dimethylpyrazine 4-oxide 2-Chloro-3,6-dimethylpyrazine alkylation 2-Chloro-3-ethyl-5,6-dimethylpyrazine 2-Chloro-5-dimethylamino-3,6-dimethylpyrazine 2-Chloro-5-ethoxy-3,6-dimethylpyrazine 2-Chloro-5-hydroxy-3,6-dimethylpyrazine 2-Chloro-5-methoxy-3,6-dimethylpyrazine