optimal concentrations gave alpha tta responses directly proportional to rat liver cytosol concentration . alpha tta was inhibited only 5 % in the presence of a 32-fold excess of cold liposomal alpha-tocopheryl acetate suggesting that the free hydroxyl group on the chromanol ring of alpha-tocopherol is needed for transfer .
C1999896
alpha-tocopheryl acetate
C0969677
alpha-tocopherol