2,2',3,3',4,5,6'-Heptachlorobiphenyl (174) Back Catalog number: 63174 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 682867 Clethodim-sulfone, 5mg Price on request C15483500 Naproxen, 250mg Price on request 95290 DWSD Mix Price on request