Description_x000D_ General description_x000D_ α-Tocopherol is synthesized from γ-tocopherol by the action of enzyme γ-tocopherol methyltransferase. It is the major form of Vitamin E in human plasma. It is present in sunflower seed oil._x000D_ Application_x000D_ (+)-α-Tocopherol has been used:_x000D_ • as a food supplement for juvenile cobia fish_x000D_ • to evaluate its protective effect on bisphenol A induced oxidative stress in rats_x000D_ • to test its chemopreventive efficacy in estrogen-mediated mammary cancer rats_x000D_ Packaging_x000D_ 10, 25, 100 g in ampule_x000D_ Biochem/physiol Actions_x000D_ Tocopherols (TCP) (vitamin E) are a series (α, β, γ and δ) of chiral organic molecules that vary in their degree of methylation of the phenol moiety of the chromanol ring. Tocopherols are lipid soluble anti-oxidants that protect cell membranes from oxidative damage. α-Tocopherol is the form of tocopherol preferentially absorbed by homo sapiens. Various isofroms and analogues of tocopherol have opposing and differentiated regulatory activities in vivo._x000D_ α-Tocopherol is essential for the photosynthesis in Synechocystis sp. strain PCC 6803. Supplementation with α-Tocopherol decreases lipid peroxidation and platelet aggregation. It inhibits protein kinase C and may play key role in gene regulation._x000D_ Packaging_x000D_ Packaged under argon in a sealed ampule._x000D_ Other Notes_x000D_ Mixed constitutional (α, β, γ, δ) isomers._x000D_ Quality_x000D_ Approx. 670 mg D-α-tocopherol per gram. The non-α content is typically between 5-35 mg/g_x000D_ Caution_x000D_ Subject to air oxidation._x000D_ Physical properties_x000D_ This product is miscible with chloroform or ethanol. It is practically insoluble in water but it is miscible with ether, acetone, and vegetable oils. It is unstable to alkaline conditions.