Any polychlorobiphenyl with molecular formula C12H4Cl6.
| Member | Definition | Role |
|---|
| 2,3,3',4,4',5-hexachlorobiphenyl | | 2,3,3',4,4',5-Hexachlorobiphenyl |
| 2,3,5,2',3',5'-hexachlorobiphenyl | A hexachlorobiphenyl that is biphenyl in which the hydrogens at the 2, 3, and 5 positions of each of the benzene rings are replaced by chlorines. | 2,2',3,3',5,5'-hexachlorobiphenyl |
| 2,3,6,2',3',6'-hexachlorobiphenyl | | 2,2',3,3',6,6'-hexachlorobiphenyl |
| 2,4,5,2',4',5'-hexachlorobiphenyl | | 2,2',4,4',5,5'-hexachlorobiphenyl |
| 2,4,6,2',4',6'-hexachlorobiphenyl | A hexachlorobiphenyl that is biphenyl in which both of the phenyl rings are substituted at positons 2, 4, and 6 by chlorines. | 2,2',4,4',6,6'-hexachlorobiphenyl |
| 3,4,5,3',4',5'-hexachlorobiphenyl | | 3,4,5,3',4',5'-Hexachlorobiphenyl |