CAS 864450-16-8 appears in our catalog under these names: 2,3,4,5,6-Pentafluorophenyl phenylmethanesulfonate, 95%, Perfluorophenyl phenylmethanesulfonate 97%, 2,3,4,5,6-Pentafluorophenyl phenylmethanesulfonate, 97%, 97%. Offered by: Combi-blocks, Ambeed, Chemat. Available pack sizes: 250mg, 5g, 1g.