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Use of the Spin-Trapping Method for the Study of Stable Radicals Produced in Solid Dihydrothymine

D. Krilov ; Faculty of Medicine, University of Zagreb, Zagreb, Croatia, Yugoslavia
J. N. Herak ; Faculty of Pharmacy and Biochemistry, University of Zagreb, Zagreb, Croatia, Yugoslavia

Puni tekst: engleski pdf 3.198 Kb

str. 351-354

preuzimanja: 147



ESR spin-trapping method has been used for the study of
radiation-induced radicals in· powdered dihydrothymine. Four approximately
equal small proton couplings (AH' = 0.35 mT), a larger
proton coupling (AH = 0.195 mT) and a nitrogen coupling (AN =
= 0.295 mT) are attributed to the nitroxide radical formed by
reaction of the spin trap with 6-dihydrothymyl radical upon dissolving
of dihydrothymine. In the pyrimidine bases of nucleic acid
and a number of related compounds irradiated in solid state and
dissolved, no signs of the trapped radicals were observed.

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