title: Activation mechanism of tris(2,3-dibromopropyl)phosphate to the potent mutagen, 2-bromoacrolein.
abstract: The potent mutagen 2- bromoacrolein is formed from the carcinogenic flame retardant tris(2,3-dibromopropyl)phosphate (Tris-BP) on incubation with hepatic microsomes. Substitution of deuterium for hydrogen at the terminal carbon atoms (C-3) of Tris-BP significantly decreased both the mutagenic response and the formation rate of 2- bromoacrolein . Mass spectral analysis of the 2- bromoacrolein that was formed from the selectively deuterated analogs of Tris-BP revealed that the primary mechanism for the formation of 2- bromoacrolein involves an initial oxidative dehalogenation at C-3 followed by a beta-elimination reaction.
mesh_terms: D000171:Acrolein / Q000031:analogs & derivatives / Q000378:metabolism* / Q000633:toxicity; D000447:Aldehydes / Q000378:metabolism*; D000818:Animals; D001711:Biotransformation; D005411:Flame Retardants / Q000378:metabolism*; D066298:In Vitro Techniques; D008297:Male; D008862:Microsomes, Liver / Q000378:metabolism*; D009152:Mutagenicity Tests; D009153:Mutagens / Q000378:metabolism*; D010755:Organophosphates / Q000378:metabolism*; D009943:Organophosphorus Compounds / Q000378:metabolism*; D010084:Oxidation-Reduction; D051381:Rats; D011919:Rats, Inbred Strains; D012486:Salmonella typhimurium / Q000235:genetics
chemical_list: D000447:Aldehydes; D005411:Flame Retardants; D009153:Mutagens; D010755:Organophosphates; D009943:Organophosphorus Compounds; C012085:tris(2,3-dibromopropyl)phosphate; C041548:2-bromoacrolein; D000171:Acrolein