英文同义词
FEMA NUMBER 3149;DIMETHYLETHYLPYRAZINE;2-ETHYL-3,5(6)-DIMETHYLPYRAZINE;2-ETHYL-3,5-DIMETHYLPYRAZINE;2-ETHYL-3,5-DIMETHYLPYRAZINE AND 2-ETHYL-3,6-DIMETHYLPYRAZINE;2-ETHYL-3,5(OR 6)-DIMETHYLPYRAZINE;2-ETHYL-3,5(3,6)-DIMETHYLPYRAZINE MIXTURE;3-ETHYL-2,5-DIMETHYLPYRAZINE AND 3-ETHYL-2,6-DIMETHYLPYRAZINE