Also Called: 2,3,3',4,5-Pentachlorobiphenyl;PCB 122 (2,3,3',4,5 -Pentachlorobiphenyl);2,3,3’,4’,5-pentachlorobiphenyl;Polychlorinated biphenyls (PCBs);2',3,3',4,5-Pentachlorobiphenyl;1,1'-Biphenyl, 2,3,3',4',5'-pentachloro-;2,3,3',4',5'-Pentachlorobiphenyl