PhenylhydrazinesFree RadicalsFree Radical ScavengersHydroxyl RadicalElectron Spin Resonance SpectroscopyPicratesAntioxidantsHydroxidesNitrogen OxidesOxidation-ReductionLipid PeroxidationSuperoxide DismutaseOxidative StressHydrogen PeroxideReactive Oxygen SpeciesSpin LabelsCyclic N-OxidesXanthine OxidaseSuperoxidesOxygenAscorbic AcidSpin TrappingLipid PeroxidesCatalaseBiphenyl CompoundsMalondialdehydeMolecular StructurePlant ExtractsGlutathioneAntipyrineKineticsProstatectomyDeferoxaminePhenyl EthersIronAmidinesPhenolsTioproninSulfonic AcidsOxidantsVitamin EThiobarbituric Acid Reactive SubstancesRats, WistarXanthineChromatography, High Pressure LiquidDose-Response Relationship, Drug