2,23,34,5,6,6Octabromobiphenyl

2,2’3,3’4,5’,6,6’-Octabromo-1,1’-biphenyl is a polybrominated biphenyls (PBB), used as flame retardants in plastics and textiles industries. It is also used in an assay for the determination of polybrominated biphenols in human milk.