CAS 7789-18-6 appears in our catalog under these names: Cesium nitrate, 99.999% (metals basis) , Cesium nitrate, Ionization Buffer Solution, Specpure|r , Cesium nitrate, 99.8% (metals basis) , Cesium nitrate, 99.99% (metals basis) . Offered by: Thermo Scientific (Alfa Aesar). Available pack sizes: 25g, 100g, 100ml, 50g, 250g, 5g, 500g.