2-((3-Nitro-2-pyridinyl)amino)-3-pyridinol 3-Hydroxy-3'-nitro-di-2-pyridylamine 3-Pyridinol, 2-((3-nitro-2-pyridinyl)amino)- 5-22-11-00430 (Beilstein Handbook Reference) 55609-27-3 BRN 0484755