D-α-Tocopherylquinone

D-α-Tocopherylquinone (α-Tocopherylquinone) is a quinone, can be isolated from Phaeodactylum tricornutum. D-α-Tocopherylquinone is an oxidation product of α-Tocopherol (vitamin E). D-α-Tocopherylquinone can act as an anticoagulant and as an antioxidant. D-α-Tocopherylquinone reduces cellular oxidative damage produced by oxidized lipids. D-α-Tocopherylquinone binds to a liver cytosolic protein with a molecular mass of about 40 kDa. D-α-Tocopherylquinone binds to glurathione-S-transferase (GST) and can be transported to the site of metabolism or excreted in the bile[1][2][3].