2,3,3',4,4',5,5'-Heptachlorobiphenyl, 5mg Back Catalog number: C-189N Availability: In the manufacturer's stock Price on request - + Recommended 71262 Hexamethylphosphoramide Price on request 95064 USEPA 521MRL QC Standard - Nitrosoamine Mix Price on request 678321 1-Propanol, 5ml Price on request