A benzopyrene is an organic compound with the formula C20H12. Structurally, these colourless pentacyclic hydrocarbon are related to pyrene ring by fusion of phenylene group. Two isomeric species are . Related compounds include cyclopentapyrenes, dibenzopyrenes, indenopyrenes and naphthopyrenes. Benzopyrene is a component of pitch. Related pentacyclic aromatic species include picene, benzofluoranthenes, and perylene. Benzopyrenes are problematic because they intercalate into DNA, interfering wit… (More on Benzopyrene)