CAS 52663-69-1 appears in our catalog under these names: PCB No. 183, PCB No. 183 10 µg/mL in Isooctane, 2,2',3,4,4',5',6–Heptachlorobiphenyl, PCB 183, Concentration: 100 µg/ml Solvent: Isooctane. Offered by: Dr. Ehrenstorfer, GLPBio, HPC Standards. Available pack sizes: 5mg, 10ml, 1ml, 1x5ml.