CAS 54451-25-1 appears in our catalog under these names: Cerium(III) carbonate hydrate, REacton|r, 99.999% (REO) , Cerium(III) carbonate hydrate, REacton|r, 99.9% (REO) . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25g, 100g, 500g.