2,2',3,3',4,4',6-Heptachlorobiphenyl (171) Back Catalog number: 66171 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 682270 Paraxanthine, 50mg Price on request 2282.10-K-IP 4-tert-Butyl-d9-phenol-2,3,5,6-d4,1000 µg/mL,isopropanol,1mL, Price on request 92071 Phenanthrene, 100µg/ml in Acetonitrile, 1ml Price on request