title: Spectrophotometric determination of plasma pyridones in man following nicotinamide administration, with a general note on the quantitative treatment of interfering substances in analytical methods.
mesh_terms: D002110:Caffeine / Q000097:blood; D006801:Humans; D009536:Niacinamide / Q000378:metabolism*; D011728:Pyridones / Q000097:blood; D013053:Spectrophotometry; D013806:Theophylline / Q000097:blood
chemical_list: D011728:Pyridones; D009536:Niacinamide; D002110:Caffeine; D013806:Theophylline