quinone

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Quinone - an overview | ScienceDirect Topics
Quinones are ubiquitous biological pigments found in a range of living organisms (bacteria, fungi, higher plants, and in few animals). They exist in nature in many forms such as benzoquinones, naphthoquinones, anthraquinones, and polycyclic quinones. For example, the K vitamins (phylloquinone) are naphthoquinones. www.sciencedirect.com
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Quinone - Wikipedia
The quinones are a class of organic compounds that are formally derived from aromatic compounds [such as benzene or naphthalene] en.wikipedia.org
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Quinone | C6H4O2 | CID 4650 - PubChem
This is an endogenously produced metabolite found in the human body. It is used in metabolic reactions, catabolic reactions or waste generation. Toxin and Toxin ... pubchem.ncbi.nlm.nih.gov
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quinone
quinone Chem. (ˈkwɪnəʊn, kwɪˈnəʊn) Also 9 kinone. [f. quin-a + -one.] a. spec. A crystalline compound (benzoquinone, C6H4O2), the simplest type of the class of quinones. b. Any one of a series of aromatic compounds derived from the benzene series of hydrocarbons when two hydrogen atoms are replaced ... Oxford English Dictionary
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NIOSH Pocket Guide to Chemical Hazards - Quinone - CDC
Pale-yellow solid with an acrid, chlorine-like odor. Molecular Weight. 108.1. Boiling Point. Sublimes. Melting Point. 240°F. Solubility. Slight. Vapor Pressure. www.cdc.gov
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Quinone | Definition & Uses - Britannica
Quinone, any member of a class of cyclic organic compounds containing two carbonyl groups, C = O, either adjacent or separated by a vinylene group. www.britannica.com
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26.2: Quinones - Chemistry LibreTexts
Quinones are not aromatic compounds but are conjugated cyclic diketones. Yet it is convenient to discuss their chemistry at this point. chem.libretexts.org
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QUINONE Definition & Meaning - Merriam-Webster
1. Either of two isomeric cyclic crystalline compounds C 6 H 4 O 2 that are derivatives of benzene. 2. Any of various usually yellow, orange, or red quinonoid ... www.merriam-webster.com
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Quinone - an overview | ScienceDirect Topics
Quinone is formed as yellow crystals and has a characteristic irritating odor like that of chlorine. It is slightly soluble in water, alcohol, ether, hot ... www.sciencedirect.com
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[PDF] Quinone (p-Benzoquinone) - Environmental Protection Agency (EPA)
Acute (short-term) exposure to high levels of quinone, via inhalation in humans, results in irritation of the eyes, consisting of discoloration of the ... www.epa.gov
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Ribosyldihydronicotinamide dehydrogenase (quinone)
Other names in common use include NRH:quinone oxidoreductase 2, NQO2, NQO2, NAD(P)H:quinone oxidoreductase-2 (misleading), QR2, quinone reductase 2, N-ribosyldihydronicotinamide dehydrogenase (quinone), and NAD(P)H:quinone oxidoreductase2 (misleading). wikipedia.org
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Dihydroorotate dehydrogenase (quinone)
This enzyme catalyses the electron transfer from dihydroorotate (electron donor) to a quinone (electron acceptor): (S)-dihydroorotate + quinone orotate This region of the protein is also thought to mediate quinone binding. wikipedia.org
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Thiosulfate dehydrogenase (quinone)
In enzymology, a thiosulfate dehydrogenase (quinone) () is an enzyme that catalyzes the chemical reaction 2 thiosulfate + 2 6-decylubiquinone tetrathionate Other names in common use include thiosulfate:quinone oxidoreductase, thiosulphate:quinone oxidoreductase, thiosulfate oxidoreductase, tetrathionate-forming wikipedia.org
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Malate dehydrogenase (quinone)
(S)-malate + a quinone oxaloacetate + reduced quinone Thus, the two substrates of this enzyme are (S)-malate and a quinone, whereas its two products are oxaloacetate and reduced quinone. wikipedia.org
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Quinate dehydrogenase (quinone)
Quinate dehydrogenase (quinone) (, NAD(P)+-independent quinate dehydrogenase, quinate:pyrroloquinoline-quinone 5-oxidoreductase) is an enzyme with systematic This enzyme catalyses the following chemical reaction quinate + quinone 3-dehydroquinate + quinol This enzyme is membrane-bound. wikipedia.org
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