2,2',4,5'-Tetrachlorobiphenyl (49) Back Catalog number: 66049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 72068 Dibenzothiophene-d8 Price on request 71211 trans-Piperylene Price on request 682730 4,4'-MDI, 1000mg Price on request