title: Characterization of the isomeric dialkylbarbituric acids formed by the reaction of barbiturates with diazoalkanes.
mesh_terms: D001391:Azo Compounds; D001463:Barbiturates / Q000032:analysis* / Q000138:chemical synthesis; D002849:Chromatography, Gas; D007536:Isomerism; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry
chemical_list: D001391:Azo Compounds; D001463:Barbiturates