192190-09-3 2',3,3',4',5'-Pentachloro-4-biphenylol 4-Hydroxy-2',3,3',4',5'-pentachlorobiphenyl [1,1'-Biphenyl]-4-ol, 2',3,3',4',5'-pentachloro- (9CI) [1,1'-biphenyl]-4-ol, 2',3,3',4',5'-pentachloro-