Mouse anti-Benzo[a]pyrene monoclonal antibody for ICC, ELISA. Benzo[a]pyrene, also known as 3, 4-Benzopyrene or 3, 4-BP, is classified as a member of the Benzopyrenes. Benzopyrenes are organic compounds containing a benzene fused to a pyrene(benzo[def]phenanthrene) ring system. Benzo[a]pyrene is formally rated as a carcinogenic (IARC 1) potentially toxic compound. 3 4-Benzpyrene is a crystalline, aromatic hydrocarbon consisting of five fused benzene rings and formed during the incomplete combustion of organic matter. 3, 4-Benzpyrene is primarily found in gasoline and diesel exhaust, cigarette smoke, coal tar and coal tar pitch, charcoal-broiled foods and certain other foods, amino acids, fatty acids and carbohydrate pyrolysis products, soot smoke, creosote oil, petroleum asphalt and shale oils. This substance is used only for research purposes. 3, 4-Benzpyrene is reasonably anticipated to be a human carcinogen.