Also Called: 2,2',3,5'-TETRACHLOROBIPHENYL (PCB-44);PCB 44;2,2',3,5'-Tetrachlorobiphenyl;2,2’,3,5’-tetrachlorobiphenyl;Polychlorinated biphenyls (PCBs);2,2',3,5'-PCB;1,1'-Biphenyl, 2,2',3,5'-tetrachloro-;2,2',3,5'-Tetrachlorobiphenyl (PCB 44);1,2-dichloro-3-(2,5-dichlorophenyl)benzene