1,1'-Biphenyl, 2,3,3',4,4',5'-hexabromo-

2,3,3'',4,4'',5''-Hexabromo-1,1''-biphenyl is a flame retardant and a standard for environmental testing and research. It is a potential developmental or reproductive toxicants. It can also suppress thyroid hormone-induced dendrite arborization of Purkinje cells.