CAS: 50-32-8 Molecular Formula: C20 H12 Molecular Weight (g/mol): 252.31 Synonym: Benzo[a]pyrene,3,4-Benz[a]pyrene,3,4-Benzopyrene,3,4-Benzpyrene,3,4-Benzpyrene (carcinogen),4,5-Benzpyrene,6,7-Benzopyrene,BaP,Benz[a]pyrene,Benzo[d,e,f]chrysene,Benzopyrene,NSC 21914 IUPAC Name: benzo[a]pyrene SMILES: c1ccc2c(c1)cc3ccc4cccc5ccc2c3c45