CAS 74472-45-0 appears in our catalog under these names: PCB No. 164, PCB No. 164 10 µg/mL in Isooctane, 2,3,3',4',5',6-Hexachlorobiphenyl, PCB 164, ROTI®Star, 5 mg, glass, PCB 164, Concentration: 10.0 µg/ml Solvent: Isooctane. Offered by: Dr. Ehrenstorfer, Biosynth, Roth, HPC Standards. Available pack sizes: 5mg, 10ml, 10mg, 25mg, 50mg, 1x10ml, 1x1ml.