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Carcinogenicity of Derivatives of 7,12-Dimethylbenz(a)anthracene

James W. Flesher and Katherine L. Sydnor
James W. Flesher
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Katherine L. Sydnor
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DOI:  Published December 1971
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Summary

Eleven derivatives of 7,12-dimethylbenz(a)anthracene were tested for carcinogenicity in Sprague-Dawley female rats by the s.c. injection of 1.0 or 0.1 mg of compound dissolved in 0.1 ml of sesame oil on alternate days for 20 doses. Eight derivatives [7-hydroxymethyl-12-methyl-, 7-formyl-12-methyl-, 7-methoxymethyl-12-methyl-, 7-acetoxymethyl-12-methyl-, 7-benzoyloxymethyl-12-methyl-, 7-iodomethyl-12-methyl-, 7-bromomethyl-12-methyl,- and 7-chloromethyl-12-methylbenz(a)anthracene] were carcinogenic at the 1-mg dose level, and 5 [benzoyloxymethyl-12-methyl-, 7-formyl-12-methyl-, 7-bromomethyl-12-methyl-, 7-hydroxymethyl-12-methyl-, and 7-iodomethyl-12-methylbenz(a)anthracene] were carcinogenic at the 0.1-mg dose level (200 days of observation). These observations suggest that the formation of 7-hydroxymethyl-12-methylbenz(a)anthracene may be the first step in the chain of events which result in cancer caused by these polycyclic hydrocarbons.

Footnotes

  • ↵1 Supported by Grant E307 from the American Cancer Society and presented in part at the Tenth International Cancer Congress, Abstracts, No. 92, p. 60, Houston, Texas, 1970.

  • Received May 5, 1971.
  • Accepted July 21, 1971.
  • ©1971 American Association for Cancer Research.
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December 1971
Volume 31, Issue 12
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Carcinogenicity of Derivatives of 7,12-Dimethylbenz(a)anthracene
James W. Flesher and Katherine L. Sydnor
Cancer Res December 1 1971 (31) (12) 1951-1954;

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Carcinogenicity of Derivatives of 7,12-Dimethylbenz(a)anthracene
James W. Flesher and Katherine L. Sydnor
Cancer Res December 1 1971 (31) (12) 1951-1954;
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Cancer Research Online ISSN: 1538-7445
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