quinone

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quin·one

(kwin'ōn, kwī'nōn),
1. General name for aromatic compounds bearing two oxygens in place of two hydrogens, usually in the para position; the oxidation product of a hydroquinone.
2. Synonym(s): 1, 4-benzoquinone (1)
Farlex Partner Medical Dictionary © Farlex 2012

quinone

(kwĭ-nōn′, kwĭn′ōn′)
n.
1. Either of two isomeric unsaturated cyclic compounds having the formula C6H4O2, found widely in plants, especially in a yellow crystalline form, and used in making dyes, tanning hides, and photography.
2. Any of various quinonoid compounds, often yellow to red in color, many of which have biological derivation or importance, such as coenzyme-Q.
The American Heritage® Medical Dictionary Copyright © 2007, 2004 by Houghton Mifflin Company. Published by Houghton Mifflin Company. All rights reserved.

quinone

(1) 1,4-Benzoquinone, see there.  
(2) An aromatic compound with two oxygens substituted for two hydrogens.
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

quinone

any of the various compounds derived from benzene.
Collins Dictionary of Biology, 3rd ed. © W. G. Hale, V. A. Saunders, J. P. Margham 2005
References in periodicals archive ?
In this work we will introduce external amino group to the chitosan on the hydroxyl groups rather than amino groups starting from chitin using para Benzoquinone (pBQ) as activating agent and Ethylene Di Amine (EDA) as source of the introduced amino groups.
He combines two stable compounds, benzaldehyde and benzoquinone, with visible light.
To calculate the kinetic parameters, isothermal scans at three different temperatures 80[degrees]C, 90[degrees]C, and 100[degrees]C were carried out for all concentrations of TBPB and benzoquinone. For example, DSC graphs for 1.00 wt% TBPB, 0.02 wt% of benzoquinone, and at three different temperatures and followed dynamic scans are shown in Fig.
CoQ10 or ubiquinone is a lipid-soluble benzoquinone with a side-chain of 10 isoprenoid units endogenously synthesized from phenylalanine and mevalonic acid.
Idebenone is a synthetic short-chain benzoquinone and a cofactor for the enzyme NAD(P)H:quinone oxidoreductase (NQO1) capable of stimulating mitochondrial electron transport, reducing and scavenging reactive oxygen species (ROS) and supplementing cellular energy levels.
[14].A total of 8 intermediates were identified, including 3-hydroxyacetaminophen, hydroquinone, 1, 4 benzoquinone, N-acetyl-p-benzoquinone imine, p-acetanisidide, 4-methoxyphenol, 2hexenoic acid, and 1, 4 dimethoxybenzene.
Nelson, "Nacetyl-p- benzoquinone imine: a cytochrome P-450-mediated oxidation product of acetaminophen," ISOTOPENPRAXIS, vol.
Studies have identified bioactive compounds of Antrodia camphorata, including polysaccharides, maleic/succinic acid derivatives, triterpenoids, benzenoids, and benzoquinone derivatives [3, 4].
Luche, "sonochemical effects in the additions of furan to masked Ortho benzoquinone," Ultrasonics Sonochemistry, vol.
The reported electrochemical methods including graphite pencil electrode [20], nafion-ruthenium oxide pyrochlore modified glassy carbon electrode [21], multwalled carbon nanotube and nafion modified glassy carbon electrode [22], carbon fiber ultra-microelectrode [23, 24], nafion and graphene oxide modified glassy carbon electrode [11], and benzoquinone modified carbon paste electrode [3].
Titanium sulfate, thiourea, tert-butyl alcohol (TBA), ethylenediaminetetraacetic acid (EDTA), and benzoquinone (BQ) come from Sinopharm Chemical Reagent Co.