benzopyrene

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benzopyrene

[¦ben·zō¦pī‚rēn]
(organic chemistry)
C20H12 A five-ring aromatic hydrocarbon found in coal tar, in cigarette smoke, and as a product of incomplete combustion; yellow crystals with a melting point of 179°C; soluble in benzene, toluene, and xylene.
References in periodicals archive ?
This finding is supported by the observation that in a placental cell line, nicotine and benzpyrene exposure showed a dose-dependent down-regulation of miR-146a, which was previously implicated in cancer and inflammation (Williams et al., 2008).
Induction of increased benzpyrene hydroxylase activity by flavones and related compounds.
* The water of the sheesha was found to have little impact on the amount of tar and benzpyrene present in the smoke.
The text establishes a target value for concentrations of benzpyrene in ambient air as a means of preventing or reducing the harmful effects of polycyclic aromatic hydrocarbons on human health and sets out common methods and criteria for assessing concentrations of arsenic, cadmium, mercury and polycyclic aromatic hydrocarbons in ambient air and deposits of such substances.