title: Mechanism of the mutagenic action of hydroxylamine. IX. The UV-induced cleavage of the N-O bond in N4-hydroxy-and N4-methoxycytidine and N6-methoxyadenosine.
abstract: The principal UV-induced (lambda = 2546nm) reaction of N4-hydroxy- and N4methoxycytidines and N6-methoxyadenosine in neutral aqueous solutions is cleavage of the exocyclic N-O bond with the respective formation of cytidine and adenosine. Quantum yields are 2.8x10(-3) and 2.2x10(-3) M/E for the first two compounds and 9.1x10(-3) M/E for N6-methoxyadenosine.
mesh_terms: D000241:Adenosine / Q000031:analogs & derivatives* / Q000528:radiation effects; D003562:Cytidine / Q000031:analogs & derivatives* / Q000528:radiation effects; D006898:Hydroxylamines; D009153:Mutagens; D014466:Ultraviolet Rays
chemical_list: D006898:Hydroxylamines; D009153:Mutagens; D003562:Cytidine; D000241:Adenosine