1,2-Dihydro-4-hydroxy-2-oxo-1-phenyl-N-3-pyridinyl-1,8-naphthyridine-3-carboxamide 1,8-Naphthyridine-3-carboxamide, 1,2-dihydro-4-hydroxy-2-oxo-1-phenyl-N-3-pyridinyl- 138304-90-2 4-Hydroxy-2-oxo-1-phenyl-N-(3-pyridyl)-1H-1,8-naphthyridine-3-carboxamide