CAS 2050-67-1 appears in our catalog under these names: PCB No. 11, PCB No. 11 10 µg/mL in Isooctane, PCB 11, ROTI®Star, 25 mg, glass, PCB 11, Concentration: 100 µg/ml Solvent: Isooctane. Offered by: Dr. Ehrenstorfer, Roth, HPC Standards. Available pack sizes: 25mg, 10ml, 1x5ml.