2,3,3',4,4',5,5'-Heptachlorobiphenyl (189) Back Catalog number: 66189 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 692289 D5-6PPD, 10mg Price on request H952702 1-Hydroxypyrene-d9, 1mg Price on request 11854.12-K-MEX5 Bis(p-chlorophenyl) sulfone,1000 µg/mL ,MeOH,1mL Price on request