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 71741 Coprostan-3-ol Price on request 19407 TCLP - Base/Neutrals Price on request 71577 2,4-Dichlorophenol-PFB derivative Price on request