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A hydroxybenzoquinone (formula: ) is any of several organic compounds that can be viewed as derivatives of a benzoquinone through replacement of one hydrogen atom (H) by an hydroxyl group (-OH). In general, the term may mean any benzoquinone derivative where any number ''n'' of hydrogens have been replaced by ''n'' hydroxyls, so that the formula is . In this case the number ''n'' (which is between 1 and 4) is indicated by a multiplier prefix (mono-, di-, tri-, tetra-, penta-, or hexa-). The unqualified term "hydroxybenzoquinone" usually means a derivative of 1,4-benzoquinone. Other hydroxy- compounds can be derived from the other isomer, namely 1,2-benzoquinone or ''ortho''-benzoquinone. The IUPAC nomenclature uses dihydrobenzenedione instead of "benzoquinone", with the necessary prefixes to indicate the positions of the carbonyl oxygens (=O) — as in 2,3-dihydroxy-1a,4a-dihydrobenzene-1,4-dione (= 2,3-dihydroxy-1,4-benzoquinone). The hydroxybenzoquinones (in the particular or the general sense) include many biologically and industrially important compounds, and are a building block of many medicinal drugs.〔 Thomson R.H. Naturally Occurring Quinones. Academic Press, London (1971). Quoted by Khalafy and Bruce. 〕 〔 Thomson R.H. Naturally Occurring Quinones III. Chapman and Hall, London (1987). Quoted by Khalafy and Bruce. 〕 == List of compounds == 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Hydroxybenzoquinone」の詳細全文を読む スポンサード リンク
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