2,3,3',4'-Tetrachlorobiphenyl (56) Back Catalog number: 63056 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 11985.16-10MG Isothipendyl hydrochloride,neat,neat,10mg, Price on request 2545.14-500MG (+/-)Atenolol, neat, Solvent-neat, Unit 500mg, # of units-1, Cas.no. 29122-68-7 Price on request 50378 Potassium (K) Price on request