α-Tocopherol Phosphate-d6 Disodium Salt is labelled α-Tocopherol phosphate (TocP) (T526185) which is used along the α-tocopherol acetate, α-tocopherol-nicotinate, α-tocopherol succinate and other esterified forms as a vitamin E supplement with similar but differential activities. At the molecular level, TocP may act as a cofactor for enzymes, as an active lipid mediator or indirectly by altering membrane characteristics.