- tocopherolquinone
- An oxidized tocopherol, formed from the isomeric 2-methyl-2-phytyl-6-chromenol with methyl groups in one or more of positions 5, 7, and 8, by migration of an H atom from 6-OH to C-4, which yields a 1,4-benzoquinone. Abbreviated TQ and preceded by α-, β-, etc., as in the tocopherols, to indicate degree of methylation. SYN: tocopherylquinone.
Medical dictionary. 2011.