CAS 7787-69-1 appears in our catalog under these names: Cesium bromide, 99.999% (metals basis) , Cesium bromide, 99.9% (metals basis) , Cesium bromide, 99% (metals basis) , Cesium bromide, ultra dry, 99.9% (metals basis) . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 10g, 50g, 250g.