CAS 338797-11-8 appears in our catalog under these names: 5-Bromo-3-methylbenzo[b]thiophene-2-sulphonyl chloride, 95%, 5-Bromo-3-methylbenzo[b]thiophene-2-sulfonyl chloride. Offered by: Combi-blocks, Fluorochem. Available pack sizes: 100mg, 1g, 250mg.