CAS 50703-06-5 appears in our catalog under these names: Methyl thiazolidine-2-carboxylate hydrochloride, 98% , METHYL THIAZOLIDINE-4-CARBOXYLATE HYDROCHLORIDE, 98%. Offered by: Thermo Scientific (Alfa Aesar), Chemat, Fluorochem. Available pack sizes: 1g, 5g, 250mg.