title: Mass spectra of some heterocycles related to N 6 -(  2 -isopentenyl)adenosine.
mesh_terms: D000225:Adenine; D000241:Adenosine; D000475:Alkenes; D013058:Mass Spectrometry; D008745:Methylation; D009705:Nucleosides; D011720:Pyrazoles; D011743:Pyrimidines; D011758:Pyrroles; D013440:Sulfides
chemical_list: D000475:Alkenes; D009705:Nucleosides; D011720:Pyrazoles; D011743:Pyrimidines; D011758:Pyrroles; D013440:Sulfides; D000225:Adenine; D000241:Adenosine