1,3,5-trichloro-2-(3,5-dichlorophenyl)benzene;56558-18-0;1,1'-Biphenyl, 2,4,6,3',5'-pentachloro-;2,4,6,3',5'-Pentachlorobiphenyl;PCB-121;2,3',4,5',6-Pentachloro-1,1'-biphenyl;1,1'-Biphenyl, 2,3',4,5',6-pentachloro-
1,3,5-trichloro-2-(3,5-dichlorophenyl)benzene