r-tocopherol

(Rac)-γ-Tocopherol (DMPBQ) is an isoform of Vitamin E that undergoes conversion to γ-Tocopherol through the action of tocopherol cyclase.

(+)-γ-Tocopherol ((+)-γ-Tocopherol) is one of the naturally occurring forms of Vitamin E. It is the most abundant Tocopherol in soybean and corn oils.

(±)-γ-Tocopherol is a form of vitamin E with antioxidant and anti-inflammatory properties. It traps and detoxifies reactive nitrogen oxide species, including nitrogen dioxide, in cell-free assays. It also reduces the synthesis of prostaglandin E2 (PGE2) induced by LPS in RAW 264.7 macrophages and by IL-1β in A549 cells. (±)-γ-Tocopherol inhibits LPS-induced nitrite release and inducible nitric oxide synthase (iNOS) expression in RAW 264.7 cells and reduces COX-2 activity in A549 cells pretreated with IL-1β. Serum levels of (±)-γ-tocopherol are decreased in patients with cardiovascular disease.