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  • Title: Mutagenicity of some methylated benzo[a]pyrene derivatives.
    Author: Santella R, Kinoshita T, Jeffrey AM.
    Journal: Mutat Res; 1982; 104(4-5):209-13. PubMed ID: 6287248.
    Abstract:
    The mutagenicity of benzo[a]pyrene (BP) and a number of methylated derivatives towards Salmonella typhimurium has been tested. The most mutagenic derivative tested was 6-methylbenzo[a]pyrene which produced about twice the number of revertants as did BP, 11-Methylbenzo[a]pyrene was slightly more mutagenic than BP. All the other compounds tested (7-, 8-, 9- and 10-methylbenzo[a]pyrene and 7,8- and 7,10-dimethylbenzo[a]pyrene) were significantly less active than benzo[a]pyrene. With the exception of 6-methylbenzo[a]pyrene, these results closely parallel the known carcinogenicity of the methylated benzo[a]pyrenes, and support the view that metabolic activation of BP may involve the 7-10 positions which are blocked in the methylated compounds.
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