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1. An essential part of coenzyme Q and vitamin E, reducible to hydroquinone. Synonym(s): quinone (2)
2. One of a class of benzoquinone derivatives.
References in periodicals archive ?
Protein targets of 1,4-benzoquinone and 1,4-naphthoquinone in human bronchial epithelial cells.
A small amount, 300 ppm, of 1,4-benzoquinone (Fluka) was used as an inhibitor to control the cure kinetics.
1,4-Benzoquinone decreased the quantum yield of HPD photobleaching at all concentrations studied (from 0.
2] is prepared by coating silica gel with ceric ammonium nitrate and is used to oxidize hydroquinones to their corresponding 1,4-benzoquinone.
Because epidemiological studies of HQ and 1,4-benzoquinone have never demonstrated carcinogenicity in humans, the International Agency for Research on Cancer (IARC) assigned their carcinogenic risk to humans as group 3: not classifiable as to carcinogenicity to humans (IARC 2011).
In a previous communication we showed that atrovirinone, a 1,4-benzoquinone isolated from the roots of Garcinia atroviridis, was able to inhibit several major proinflammatory mediators of inflammation.
The commonly used inhibitors and retarders for the free radical reaction include 1,4-benzoquinone, hydroquinone, catechol, etc.
This is especially important because hydroquinone is the precursor of 1,4-benzoquinone, which is generally regarded as the most hematotoxic metabolite of benzene (Kim et al.
BACKGROUND: Metabolism of benzene produces reactive electrophiles, including benzene oxide (BO), 1,4-benzoquinone (1,4-BQ), and 1,2-benzoquinone (1,2-BQ), that are capable of reacting with blood proteins to produce adducts.
Among them were 1,4-benzoquinone (a mutagen) and N-acetyl-p-benzoquinone imine (a hepatotoxicant also produced during acetaminophen metabolism that is responsible for overdose deaths).
A highly efficient direct coupling of iodole compounds with 1,4-benzoquinones was developed "on water" in the absence of any catalyst via CDC.