2,2',3,3',4',5,6-Heptachlorobiphenyl (177) Back Catalog number: 66177 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 59617 Metals Standard Price on request 10708.2-100-MEX5 O,O-Dimethylthiophosphate-13C2, sodium salt Price on request 34051 trans-1,4-Dichloro-2-butene Price on request