CAS 33284-50-3 appears in our catalog under these names: PCB No. 7, PCB No 7, PCB 7, ROTI®Star, 25 mg, glass, PCB 7, Concentration: 100 µg/ml Solvent: Isooctane. Offered by: Dr. Ehrenstorfer, GLPBio, Roth, HPC Standards. Available pack sizes: 25mg, 1ml, 1x5ml.