Ethyl5-methyl-3-oxo-3,4-dihydropyrazine-2-carboxylate;ETHYL3-HYDROXY-5-METHYLPYRAZINE-2-CARBOXYLATE;2-Pyrazinecarboxylicacid,3,4-dihydro-5-methyl-3-oxo,ethylester;ethyl2-hydroxy-6-methylpyrazine-3-carboxylate;ethyl6-methyl-2-oxo-1H-pyrazine-3-carboxylate;methyl3-hydroxy-5-methylpyrazine-2-carboxylate
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