2,2',3,3',4,5,6'-Heptachlorobiphenyl (174) Back Catalog number: 63174 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended C17662800 Tribenzylamine, certified, 0.25g Price on request 10883.18-10MG 16?-Hydroxy-17ß-estradiol-2,4-d2,neat,neat,10mg, Price on request EN-1948ES Extraction Standard Solution, in nonane/6.8% toluene, 1,2ml Price on request