CAS 7758-99-8 appears in our catalog under these names: Copper(II) sulfate, pentahydrate/ 99%, Copper(II) sulfate pentahydrate, 99% , Copper(II)sulfate pentahydrate 99%, Copper(II) sulfate pentahydrate, 99+%, for analysis, Copper(ii) sulfate pentahydrate, 98%. Offered by: Chemat, Thermo Scientific (Alfa Aesar), Ambeed, Thermo Scientific (Acros), Combi-blocks. Available pack sizes: 1kg, 1000g, 25000g, 5000g, 100g, 500g, 5KG, 250g.