dictionary help| TQ --> tocopherolquinone | medical dictionary |
An oxidised 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 H atom from 6-OH to C-4, which yields a 1,4-benzoquinone. Abbreviated TQ and preceded by alpha-, beta-, etc., as in the tocopherols, to indicate degree of methylation.
Synonyms: tocopherylquinone.
Abbreviation: TQ
(05 Mar 2000)
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