CAS 1113-13-9 appears in our catalog under these names: S-Propyl propane-1-sulfonothioate 98%, 1-Propanesulfonothioic acid, S-propyl ester, 98%, 98%, s-Propyl propane-1-sulfonothioate, 95%. Offered by: Ambeed, Chemat, Fluorochem. Available pack sizes: 100mg, 250mg, 1g, 5g.