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Toxicology letters

Metabolism of vinylcyclooctane and partition ratio between epoxide formation and cytochrome P-450 destruction.


PMID 6701911

Abstract

Vinylcyclooctane (VCO), which binds to the active site of cytochrome P-450 (P-450) giving a type I difference spectrum, has been found to form the corresponding epoxide as the main metabolite on treatment with liver microsomal monooxygenase obtained from phenobarbital-treated or untreated mice. During this metabolic process about 40% of the microsomal P-450 isozymes are destroyed, but the remainder still demethylates aminopyrine. Approx. 180 molecules of VCO are turned over and 132 of epoxyethylcyclooctane (EECO) are formed for each destructive event.

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94959
Vinylcyclooctane, ≥98.0%
C10H18