title: Substituent effects on oxidation and stabilization of phenothiazine semiquinone free radicals.
mesh_terms: D004578:Electron Spin Resonance Spectroscopy; D007700:Kinetics; D010084:Oxidation-Reduction; D010640:Phenothiazines; D011809:Quinones; D013053:Spectrophotometry
chemical_list: D010640:Phenothiazines; D011809:Quinones