CAS 52712-04-6 appears in our catalog under these names: PCB No. 141, PCB No. 141 10 µg/mL in Isooctane, PCB 141, ROTI®Star, 5 mg, glass, PCB 141, Concentration: 100 µg/ml Solvent: Isooctane. Offered by: Dr. Ehrenstorfer, Roth, HPC Standards. Available pack sizes: 5mg, 10ml, 1x5ml.