CAS 16606-02-3 appears in our catalog under these names: 2,4',5-Trichlorobiphenyl, PCB No. 31, PCB No. 31 10 µg/mL in Cyclohexane, PCB No. 31 10 µg/mL in Isooctane, PCB No. 31 100 µg/mL in Isooctane. Offered by: TRC, Dr. Ehrenstorfer, Roth, HPC Standards. Available pack sizes: 500mg, 25mg, 10ml, 1ml, 1x5ml.