CAS 13813-22-4 appears in our catalog under these names: Lanthanum(III) iodide, ultra dry, 99.9% (REO) , Lanthanum(III) iodide, ultra dry, 99.995+% (metals basis) , Lanthanum(III) iodide, ultra dry, 99.99% (metals basis) . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 1g, 5g, 1g , 5g .