CAS 199328-31-9 appears in our catalog under these names: 5-Chlorosulfonyloxindole, 95%, 2-Oxoindoline-5-sulfonyl chloride, TECH , 2,3-Dihydro-2-oxo-1H-indole-5-sulphonyl chloride 97%, 2-Oxoindoline-5-sulfonyl chloride, 97%, 97%, 2-Oxo-2,3-dihydro-1H-indole-5-sulfonyl chloride, 95%. Offered by: Combi-blocks, Thermo Scientific, Ambeed, Chemat, Fluorochem. Available pack sizes: 10g, 5g, 1g, 250MG, 100mg, 25g, 100g, 2.5g.