英文同义词
5-hydroxy-6-methylpyrazine-2-carboxylic acid;4,5-Dihydro-6-methyl-5-oxo-2-pyrazinecarboxylic acid;2-Pyrazinecarboxylic acid, 4,5-dihydro-6-Methyl-5-oxo-;6-Methyl-5-oxo-4,5-dihydropyrazine-2-carboxylic acid;5-hydroxy-6-methyl-2-carboxylic acid pyrazine