Synonyms: Nicotinicacid, 1,2-dihydro-4-hydroxy-6-methyl-2-oxo-, ethyl ester (7CI); Nicotinic acid,2,4-dihydroxy-6-methyl-, ethyl ester (6CI); Ethyl1,2-dihydro-4-hydroxy-6-methyl-2-oxo-3-pyridinecarboxylate; Ethyl4-hydroxy-6-methyl-2-oxo-1,2-dihydropyridine-3-carboxylate; NSC 109231