Also Called: 2,2',4,5,5'-PENTACHLOROBIPHENYL (PCB-101);2 , 2′ , 4 , 5 , 5′-pentachlorobiphenyl;PCB-101 [2,2',4,5,5'-pentachlorobiphenyl];PCB 101;2,2',4,5,5'-Pentachlorobiphenyl;2,2′,4,5,5′-pentachlorobiphenyl;2,2’,4,5,5’-pentachlorobiphenyl;Polychlorinated biphenyls (PCBs);1,2,4-trichloro-5-(2,5-dichlorophenyl)benzene;PCB-101 (2,2',4,5,5'-pentachlorobiphenyl)