title: Comparative metabolism and carcinogenicity of ring-halogenated 3,3-dimethyl-1-phenyltriazenes.
abstract: The objective of this study was to compare urinary metabolism of parent 3,3-dimethyl-1-phenyltriazene with that of its ring-substituted 1-(4-chlorophenyl)-3,3-dimethyltriazene and 1-(2,4,6-trichlorophenyl)-3,3-dimethyltriazene congeners, in an attempt to evaluate the molecular requirements for systemic carcinogenic activity. Complementary carcinogenicity assays were conducted at low equimolar dose levels using both 4- und 2,4,6-chlorinated and brominated analogues. Ring halogenation was found to prolong metabolic detoxification and to reduce carcinogenic activity.
mesh_terms: D000818:Animals; D002273:Carcinogens / Q000378:metabolism*; D008297:Male; D009374:Neoplasms, Experimental / Q000139:chemically induced*; D051381:Rats; D011919:Rats, Inbred Strains; D013329:Structure-Activity Relationship; D014226:Triazenes / Q000378:metabolism* / Q000633:toxicity
chemical_list: D002273:Carcinogens; D014226:Triazenes; C008848:1-phenyl-3,3-dimethyltriazene