CAS 13842-67-6 appears in our catalog under these names: Terbium(III) sulfate octahydrate, Terbium(III) sulfate octahydrate, REacton|r, 99.9% (REO) , TERBIUM(III) SULFATE OCTAHYDRATE, 99.9%. Offered by: GLPBio, Thermo Scientific (Alfa Aesar), Sigma-Aldrich. Available pack sizes: 25g, 5g, 2g, 10g, 50g.