L-Thyroxine/T4Synonyms:Levothyroxine;L-t4;T4(hormone);O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-l-tyrosin;O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodotyrosine;TetraiodothyronineCAS:51-48-9EINECS:200-101-1Assay:99%min.USP30Packing:1kg/foilbagortin.MF:C15H11I4NO4MW:776.87Character:WhiteCrystallineSolid.Usage:Oneofthethyroidhormonesinvolvedinthemaintenanceofmetabolichomeostasis.Synthesizedandstoredasaminoacidresiduesofthyroglobulin,themajorproteincomponentofthethyroidfollicularcolloid.Synthesisandsecretionareregulatedbythep.)