Also Called: 4'-OH-PCB-109; 4-hydroxy-2' , 3 , 3' , 4' , 6'-pentachlorobiphenyl; 2' , 3 , 3' , 4' , 6'-pentachloro-4-biphenylol; 2-chloro-4- ( 2 , 3 , 4 , 6-tetrachlorophenyl) phenol;4'-hydroxy-2 , 3 , 3' , 4 , 6-pentachlorobiphenyl;4'-hydroxy-2,3,3',4,6-pentachlorobiphenyl