(2,2′-Bis(2-indenyl)biphenyl)zirconium Dichloride forms a metallocene and co-catalyst system with methylaluminoxane (MAO). It is also derived from 1,1′-Diphenyl (D486980), which is a polycyclic aromatic hydrocarbon (PAH) that has been shown to cause genetic effects in yeast and developmental defects and mitotic abnormalities in sea urchins.