Fluoranthene is a polycyclic ambrosial hydrocarbon (PAH). The atom can be beheld as the admixture of naphthalene and benzene assemblage affiliated by a five-membered ring. Although samples are generally anemic yellow, the admixture is colorless. It is acrid in nonpolar amoebic solvents. It is a affiliate of the chic of PAHs accepted as non-alternant PAHs because it has rings added than those with six carbon atoms. It is a structural isomer of the alternant PAH pyrene. It is not as thermodynamically abiding as pyrene. Its name is acquired from its fluorescence beneath UV light. It is acclimated in the amalgam of Florantyrone. Fluoranthene is begin in abounding agitation products, forth with added PAHs. Its attendance is an indicator of beneath able or lower-temperature combustion, back non-alternant PAHs are beneath adopted in accumulation than alternant PAHs. Fluoranthene is one of the U.S. Environmental Protection Agency's 16 antecedence pollutant PAHs.