2,2',3,3',4,4',6-Heptachlorobiphenyl (171) Back Catalog number: 63171 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 73443 2,4-Diamino-6-nitrotoluene Price on request 1830.4-1G 2-Bromothiophene, neat, Solvent-neat, Unit 1g, # of units-1, Cas.no. 1003-09-4 Price on request 92314 EPA Method 525 Spike C Price on request