title: New synthesis of the 4- and 6-pyridones of 1-methylnicotinamide and 1-methylnicotinic acid (trigonelline).
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D002845:Chromatography; D009536:Niacinamide / Q000031:analogs & derivatives* / Q000138:chemical synthesis; D009539:Nicotinic Acids / Q000138:chemical synthesis*; D011728:Pyridones / Q000138:chemical synthesis; D013053:Spectrophotometry
chemical_list: D009539:Nicotinic Acids; D011728:Pyridones; D009536:Niacinamide