trichlorobenzene 3,3',4,4',5-pentachlorobiphenyl 3,3',4,4',5-pentachloro-1,1'-biphenyl C12H5Cl5 CHEBI:34317 323.88339 chebi_ontology 3,4,5,3',4'-Pentachlorobiphenyl PCB 126 A pentachlorobiphenyl in which the chlorines are located at the 3, 4, 5, 3', and 4' positions. 3,4,5,3',4'-Penta coplanar polychlorinated biphenyl InChI=1S/C12H5Cl5/c13-8-2-1-6(3-9(8)14)7-4-10(15)12(17)11(16)5-7/h1-5H 3,3',4,4',5-Pentachlorobiphenyl 3,4,3',4',5'-Pentachlorobiphenyl Clc1ccc(cc1Cl)-c1cc(Cl)c(Cl)c(Cl)c1 0 KEGG:C14573 REHONNLQRWTIFF-UHFFFAOYSA-N 326.43160 CAS:57465-28-8 pentachlorobiphenyl