Description 2-Hydroxy-5-nitropyridine, 99%, 25g For Research & Development Not for drug, human, animal, or food use Certificate of Analysis: Appearance (Color) Off-white Appearance (Form) Powder Assay (Elemental Analysis) [C] 42.8% [H] 2.8% [N] 19.9% Assay (GC) 99.0% Infrared Spectrum Conforms to structure Melting Point 188-191ºC CAS: 5418-51-9 FORMULA: C5H4N2O3