methyl 2-hydroxyisonicotinate;
4-methoxycarbonyl-2(1H)-pyridone;
Methyl 2-hydroxypyridine-4-carboxylate;
Methyl 1,6-dihydro-6-oxo-pyridine-4-carboxylate;
4-Pyridinecarboxylic acid, 1,2-dihydro-2-oxo-, methyl ester;
Methyl 2-oxo-1,2-dihydro-4-pyridinecarboxylate;
methyl 1,2-dihydro-2-oxopyridine-4-carboxylate;
1,2-dihydro-2-oxo-4-methoxycarbonyl-1H-pyridine;
2-Oxo-1,2-dihydropyridine-4-carboxylic acid methyl ester;
4-methoxycarbonyl-2-pyridone;
methyl 2-oxo-1,2-dihydropyridine-4-carboxylate;
Methyl pound inverted question mark1,2-dihydro-2-oxopyridine-4-carboxylate;