title: Use of nitrogen-15 nuclear magnetic resonance spectroscopy in natural-product chemistry.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D004798:Enzymes; D009682:Magnetic Resonance Spectroscopy; D008968:Molecular Conformation; D009587:Nitrogen Isotopes; D009705:Nucleosides; D009711:Nucleotides
chemical_list: D004798:Enzymes; D009587:Nitrogen Isotopes; D009705:Nucleosides; D009711:Nucleotides