has role is enantiomer of (R,R,R)-alpha-tocopherol An α-tocopherol that has <i>R</i>,<i>R</i>,<i>R</i> configuration. The naturally occurring stereoisomer of α-tocopherol, it is found particularly in sunflower and olive oils. CHEBI:18145 alpha-tocopherol antiviral agent EC 2.7.11.13 (protein kinase C) inhibitor (S,S,S)-alpha-tocopherol anticoagulant nutraceutical immunomodulator antiatherogenic agent algal metabolite