Synonyms: Pyrazinecarboxylicacid, 3,4-dihydro-3-oxo-, methyl ester (9CI); Pyrazinecarboxylic acid,3-hydroxy-, methyl ester (8CI); Pyrazinoic acid, 3-hydroxy-, methyl ester(6CI); 3-(Methoxycarbonyl)pyrazin-2-one; 3-Oxo-3,4-dihydro-2-pyrazinecarboxylicacid methyl ester; Methyl 3-hydroxypyrazinoate; Methyl3-oxo-3,4-dihydro-pyrazine-2-carboxylate