2,3,3',4,4',5,5'-Heptachlorobiphenyl (189) Back Catalog number: 66189 Manufacturer: ABSOLUTE STANDARDS Availability: In the manufacturer's stock Price on request - + Recommended 2721.16-K-IO 4,4'-Dimethylbibenzyl, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 538-39-6 Price on request 10557.16-1G Indigo dye Price on request 1095.9-K-IO 2-Methylbenzofuran, 1000µg/mL, Solvent-isooctane, Unit 1mL, # of units-1, Cas.no. 4265-25-2 Price on request