CAS 550998-56-6 appears in our catalog under these names: Methyl 7-chlorobenzo[b]thiophene-2-carboxylate 95%, Methyl 7-chlorobenzo[b]thiophene-2-carboxylate, 95%, 95%, Methyl 7-chlorobenzo[b]thiophene-2-carboxylate, 98%. Offered by: Ambeed, Chemat, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g.