2,3,3',4,4',5'-Hexachlorobiphenyl (157) Back Catalog number: 68157 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90975 1,2:3,4-Diepoxybutane Price on request 71885 Di-n-propyl phthalate Price on request 677178 Methyltin trichloride, 50mg Price on request