AcetonitrilesMetalloporphyrinsPorphyrinsPeroxynitrous AcidThiouracilFree Radical ScavengersMetals, AlkaliOrganometallic CompoundsEuropiumReactive Oxygen SpeciesSuperoxidesSuperoxide DismutasePotentiometryChelating AgentsLuminescenceMolecular StructureNitratesCatalysisHydrogen PeroxideAntioxidantsOxidative StressOxidantsOxidation-ReductionEgtazic AcidStereoisomerismNitric OxideTyrosine