CAS 2437-79-8 appears in our catalog under these names: PCB No. 47, PCB No. 47 10 µg/mL in Isooctane, PCB No. 47 100 µg/mL in Isooctane, 2,2',4,4'–Tetrachlorobiphenyl, 2,2',4,4'-Tetrachlorobiphenyl. Offered by: Dr. Ehrenstorfer, GLPBio, Biosynth, Roth, HPC Standards. Available pack sizes: 25mg, 10ml, 1ml, 25ml, 50ml, 100ml, 1x5ml.