2,3,3',4,4',5'-Hexachlorobiphenyl (157) Back Catalog number: 68157 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 90223 n-Hexane Price on request 11107.5-50-T 3-Bromo-2,2-bisbromomethyl-1-propanol,50 µg/mL,toluene,1mL, Price on request 72104 L-Aspartic acid Price on request