4-((4-Pyridinylcarbonyl)amino)benzoic acid N-oxide 5-22-02-00278 (Beilstein Handbook Reference) 62834-16-6 BENZOIC ACID, p-ISONICOTINAMIDO-, 1'-OXIDE BRN 0484689 Benzoic acid, 4-((4-pyridinylcarbonyl)amino)-, N-oxide Isonicotinamide, N-(p-carboxyphenyl)-, 1-oxide N-(4-Carboxyphenyl)isonicotinamide 1-oxide