title: Mass spectroscopy of pyrimidine cyclonucleosides.
mesh_terms: D000085:Acetates; D003500:Cyclization; D013058:Mass Spectrometry; D008722:Methods; D008745:Methylation; D008956:Models, Chemical; D009705:Nucleosides / Q000032:analysis*; D011743:Pyrimidines
chemical_list: D000085:Acetates; D009705:Nucleosides; D011743:Pyrimidines