title: Efficient syntheses of [3-15N]uracil and [3-15N]thymine.
abstract: Regiospecific syntheses of [3-15N]uracil and [3-15N]thymine are described using [15N]ammonium sulfate as a source of labeled nitrogen. The overall yields are excellent, and the reactions are amenable to production of multigram quantities of labeled material.
mesh_terms: D000645:Ammonium Sulfate; D007202:Indicators and Reagents; D007553:Isotope Labeling / Q000379:methods; D009682:Magnetic Resonance Spectroscopy; D009587:Nitrogen Isotopes; D013941:Thymine; D014498:Uracil
chemical_list: D007202:Indicators and Reagents; D009587:Nitrogen Isotopes; D014498:Uracil; D013941:Thymine; D000645:Ammonium Sulfate