英文同义词: | Pyrazinecarboxylic acid, trimethyl- (9CI);3,5,6-Trimethylpyrazin-2-carboxylic acid;trimethylpyrazine-2-carboxylic acid;Methyl 1,3-dimethyl-1,6-dihydropyrazine-2-carboxylate;2-Pyrazinecarboxylic acid, 3,5,6-trimethyl-;Tetramethylpyrazine Impurity 5 |