CAS 25416-65-3 appears in our catalog under these names: Levothyroxine Sodium, L–Thyroxine sodium xhydrate, 3,3',5,5'-Tetraiodo-L-thyronine sodium hydrate, L-Thyroxine sodium xhydrate, 95%, 95%, L-Thyroxine sodium xhydrate, 99.91%. Offered by: Mikromol, GLPBio, Biosynth, Chemat, MedChemExpress. Available pack sizes: 100mg, 10g, 25g, 5g, 50g, 100g, 1g, 10 g.