title: THE IONIZATION POTENTIALS OF THE PI- AND LONE-PAIR ELECTRONS OF BIOCHEMICAL PURINES AND PYRIMIDINES.
mesh_terms: D000225:Adenine; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D003596:Cytosine; D004583:Electrons; D006147:Guanine; D011687:Purines; D011743:Pyrimidines; D012106:Research; D014498:Uracil
chemical_list: D011687:Purines; D011743:Pyrimidines; D014498:Uracil; D006147:Guanine; D003596:Cytosine; D000225:Adenine; C030985:purine
keywords: ADENINE; CHEMISTRY, PHYSICAL; CYTOSINE; ELECTRONS; EXPERIMENTAL LAB STUDY; GUANINE; URACIL