6-oxo-1-phenyl-1,6-dihydropyridine-3-carboxylic acid;1,6-Dihydro-6-oxo-1-phenyl-3-pyridinecarboxylic Acid; 6-Oxo-1-phenyl-1,6-dihydropyridine-3-carboxylic Acid;5-Carboxy Pirfenidone,
6-oxo-1-phenyl-1,6-dihydropyridine-3-carboxylic acid;1,6-Dihydro-6-oxo-1-phenyl-3-pyridinecarboxylic Acid; 6-Oxo-1-phenyl-1,6-dihydropyridine-3-carboxylic Acid;5-Carboxy Pirfenidone,