Illustrated Glossary of Organic Chemistry

Benzo[a]pyrene: A polycyclic aromatic hydrocarbon (PAH) having the molecular structure shown below, or a molecule containing this moiety. A known human carcinogen, found in asphalt, burning organic material, chimney soot, etc.

Molecular Structure of Benzo[a]pyrene





Bond-line structure
  
Ball and spoke
  
Space-filling model