part_of vitamin E alpha-tocopherol 2014-01-09T17:15:15Z A condition in which the main influencing factor is the most active form of vitamin E, a 6-hydroxychroman derivative (chromene) with methyl groups in position 2,5,7, and 8 and a phytyl side chain attached at carbon 2. May be described chemically as 2R-(4'R,8'R)-5,7,8-trimethyltocol, with the term tocol indicating the 2-ring structure (benzopyran-6-ol) basic to all vitamin E compounds. CHEBI:22470 XCO:0000379 a-tocopherol experimental_condition_ontology jsmith