CAS 74472-33-6 appears in our catalog under these names: 2,3,3',6-Tetrachlorobiphenyl, PCB 59, ROTI®Star, 10 mg, glass, PCB 59, Concentration: 100 µg/ml Solvent: Isooctane. Offered by: Biosynth, Roth, HPC Standards. Available pack sizes: 25ml, 50ml, 10mg, 1x5ml.