title: [Synthesis of 14C-labeled optically active N-methyl-barbiturates. 14. Barbituric acid derivatives].
mesh_terms: D001463:Barbiturates / Q000138:chemical synthesis*; D002247:Carbon Isotopes; D006591:Hexobarbital / Q000138:chemical synthesis*; D007553:Isotope Labeling; D008745:Methylation; D013237:Stereoisomerism; D014508:Urea / Q000138:chemical synthesis
chemical_list: D001463:Barbiturates; D002247:Carbon Isotopes; D014508:Urea; D006591:Hexobarbital
vernacular_title: Synthese  14 C-markierter optisch aktiver N-Methylbarbiturate. 14. Barbitursäurederivate.