Menadione nicotinamide bisulfite73581-79-0100 % similar Nicotinamide98-92-045 % similar 2-Methyl-1,4-naphthoquinone sodium bisulfite130-37-044 % similar Nicotinamide hydriodide3726-23-643 % similar 3-Propionylpyridine1570-48-536 % similar Nicotinuric acid583-08-434 % similar Methyl β-oxo-3-pyridinepropanoate54950-20-832 % similar 3-(2-Bromoacetyl)pyridine hydrobromide17694-68-732 % similar 3-Acetylpyridine350-03-831 % similar Thionicotinamide4621-66-331 % similar