CAS 2706-91-4 appears in our catalog under these names: Perfluoropentanesulfonic acid, Perfluoropentanesulfonic acid 100 µg/mL in Methanol:Water, Perfluoropentanesulfonic Acid, 1,1,2,2,3,3,4,4,5,5,5-Undecafluoropentane-1-sulfonic acid, Perfluoro-n-pentanesulfonic acid, 25 mg, glass ampoule. Offered by: Dr. Ehrenstorfer, GLPBio, Biosynth, MedChemExpress, Roth. Available pack sizes: 25mg, 1ml, 1mg, 10mg, 5mg, 50mg, 100mg, 250mg.