CAS 6291-07-2 appears in our catalog under these names: 5-Chloronaphthalene-1-sulfonyl chloride, 95%, 5-Chloronaphthalene-1-sulfonyl Chloride , >95% (HPLC), 5-Chloronaphthalene-1-sulfonyl chloride, 97%, 5-Chloronaphthalene-1-sulfonyl chloride, 98%, 98%, 5-Chloronaphthalene-1-sulfonyl chloride, 98%. Offered by: Combi-blocks, TRC, AmBeed, Chemat, Fluorochem. Available pack sizes: 100mg, 1g, 250mg, 5g.