CAS 2058-94-8 appears in our catalog under these names: Perfluoroundecanoic acid, 95%, Heneicosafluoroundecanoic Acid, Perfluoroundecanoic Acid, Heneicosafluoroundecanoic Acid, Heneicosafluoroundecanoic Acid, >97.0%(GC)(T). Offered by: Combi-blocks, Chemat Brand, TRC, Dr. Ehrenstorfer, GLPBio. Available pack sizes: 100g, 5g, 25g, 1g, on request, 100mg, 10MG, 500 mg.