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Опубликовано
2009-10-05
Опубликовано на SciPeople2009-12-05 20:18:06
ЖурналCurrent Organic Chemistry
5-Hydroxy-6-methyluracil, an efficient scavenger of peroxyl radical in water
2009, Vol.13, No.17, 1733-1736
Аннотация
The reactivity of 5-hydroxy-6-methyluracil (HMU) towards peroxyl radicals generated from the aerobic thermal decomposition of 2,2′-azo-bis(2-amidinopropane)dihydrochloride (AAPH) has been investigated. The oxidation product of HMU is dihydro-5,5,6-trihydroxy-6-methylpyrimidin-2,4-dion (94%). The relative oxidation rate of HMU vs. quercetin by peroxyl radicals generated from AAPH has been measured as 0.20-+0.04 at 54.6°C, hence HMU is the effective scavenger of peroxyl radicals. The overall kinetic parameters and the efficiency of radical generation from AAPH in water solution at pH 7.0 (0.1 M phosphate buffer) has been determined using HMU in temperature range 26° - 84°C.
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