Phenanthrene is a polycyclic aromatic hydrocarbon (PAH).1 It is found in fossil fuels and produced during the combustion of organic material. Phenanthrene accumulates in the environment, is toxic to aquatic species, and is considered a pollutant. It has been used as an intermediate in the synthesis of certain pesticides, plastics, and steroids.
1.Waigi, M.G., Kang, F., Goikavi, C., et al.Phenanthrene biodegradation by sphingomonads and its application in the contaminated soils and sediments: A reviewInt. Biodeter. Biodegr.104333-349(2015)