A hydroquinone is a compound with two hydroxyl (OH) groups bound to aromatic carbons, which can be reversibly oxidized by 2 electrons to a quinone (with two double bonded oxygens), which makes this family of compounds useful in electron transport chains.

Hydroquinone, also known as benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene, having the chemical formula C 6 H 4 (OH) 2. It has two hydroxyl groups bonded to a benzene ring in a para position.

2021年7月31日 · When alcohols solutions of hydroquinone and quinone are mixed, a brown-red color develops and a green-black 1:1 complex crystallizes that is known as quinhydrone. This substance is a charge-transfer complex (Section 24-6C), with the diol acting as the electron donor and the dione as the electron acceptor. Quinhydrone is not very soluble and ...

Quinones form polymers by formation of hydrogen bonds with ρ-hydroquinone. [ 5 ] Quinones are oxidizing agents, sometimes reversibly so. Relative to benzoquinone, more strongly oxidizing quinones include chloranil and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (also known as DDQ). [ …

2015年1月14日 · Here, we describe the molecular and pharmacological features of both molecules that arise from their structural differences to answer the question if idebenone is merely a CoQ 10 analogue as frequently perpetuated in the literature or a pharmaceutical drug with entirely different features.

2021年2月15日 · 1,4-Hydroquinone (H 2 Q) was found to be a better O 2 − radical scavenger than BQ. [H 2 Q] can be easily and accurately measured by fluorescence spectroscopy. In competition-based experiments, 1,4-benzoquinone (BQ) has been a frequently applied compound for determination of the role of O 2− radicals.

2022年11月15日 · Hydroquinone is a skin-lightening agent used as an active ingredient in topical dermatological formulations prescribed for treating cutaneous diseases caused by hyperpigmentation.

2023年1月23日 · Phenols are rather easily oxidized despite the absence of a hydrogen atom on the hydroxyl bearing carbon. Among the colored products from the oxidation of phenol by chromic acid is the dicarbonyl compound para-benzoquinone (also known as 1,4-benzoquinone or simply quinone); an ortho isomer is also known. These compounds are easily reduced to ...

2016年1月10日 · When the reduction of quinones such as 1,4-benzoquinone is carried out in the presence of an excess of strong to moderate proton donors (DH) such as carboxylic acids, the corresponding hydroquinone species (QH 2) is yielded following a global chemically irreversible two-electron and two-proton transfer mechanism [21].

Hydroquinone, also known as benzene-1,4-diol or quinol, is an aromatic organic compound that is a type of phenol, a derivative of benzene, having the chemical formula C6H4 (OH)2. It has two hydroxyl groups bonded to a benzene ring in a para position. Benzoquinone (C6H4O2) is a quinone with a single benzene ring.