1,1'-Biphenyl, 3,3',4,4',5-pentachloro- 3,3',4,4',5-Pentachloro-1,1'-biphenyl 3,3',4,4',5-Pentachlorobiphenyl 3,4,3',4',5'-Pentachlorobiphenyl 3,4,5,3',4'-Penta coplanar polychlorinated biphenyl 3,4,5,3',4'-Pentachlorobiphenyl 57465-28-8 BRN 4190261 CCRIS 8862 PCB 126