CAS 10099-58-8 appears in our catalog under these names: Lanthanum(III) chloride, ultra dry, 99.9% (REO) , Lanthanum(III) chloride, ultra dry, 99.99% (REO) , Lanthanum(III) chloride, ultra dry, 99.99% (metals basis) , Lanthanum(III) chloride, anhydrous, 99.9% (REO) . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 10g, 50g, 250g, 5g, 25g, 100g, 100g .