2-Pyrazinecarboxylic acid, 3,4-dihydro-5-methyl-3-oxo-, ethyl ester
Pyrazinecarboxylic acid, 3,4-dihydro-5-methyl-3-oxo-, ethyl ester
Ethyl 3,4-dihydro-5-methyl-3-oxo-2-pyrazinecarboxylate
3-Hydroxy-5-methylpyrazine-2-carboxylic acid ethyl ester
Ethyl 3-hydroxy-5-methylpyrazine-2-carboxylate