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 58011 Sodium (Na) Price on request 673827 Pentachlorobenzene, 1000mg Price on request 675869 Rifaximin, 100mg Price on request