ChemInform Abstract: Antioxidant Activity of 1-Thio-α-tocopherol and Related Compounds. EPR, ENDOR, and UV-Visible Absorption Spectra of Some of the Derived Phenoxyl Radicals.ZAHALKA, H. A.; ROBILLARD, B.; HUGHES, L.; LUSZTYK, J.; BURTON, G. W.; JANZEN, E. G.; KOTAKE, Y.; INGOLD, K. U. · ChemInform · 1989