2,2',4,5'-Tetrachlorobiphenyl (49) Back Catalog number: 66049 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 10335.16-10MG O-Desmethylvenlafaxine,neat,neat,10mg, Price on request 674141 Clomazone, 100mg Price on request 3489.11-100-AN Profenofos Price on request