CAS 6322-07-2 appears in our catalog under these names: D-Gulono-1,4-lactone, D–Gulono–1,4–lactone, D-Gulonic acid-1,4-lactone, 98% , D(-)-Gulonic acid gamma-lactone, 99%, 1,4-D-Gulonolactone 97%. Offered by: TRC, GLPBio, Thermo Scientific (Alfa Aesar), Thermo Scientific (Acros), Ambeed. Available pack sizes: 10g, 25g, 5g, 50g, 1g, 100g, 500g, 250g.