2,2',3,3',4,5,6'-Heptachlorobiphenyl (174) Back Catalog number: 66174 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 672931 Butachlor, 100mg Price on request 79053 4,4’-Methoxychlor Price on request 674553 Picolinafen free acid, 10mg Price on request