Product Name: Liothyronine sodium(T3 or Liothyronine) CAS: 55-06-1 Synonyms: (S)-2-AMINO-3-[4-(4-HYDROXY-3-IODOPHENOXY)-3,5-DIIODOPHENYL]PROPIONIC ACID SODIUM SALT;SODIUM (S)-2-AMINO-3-[4-(4-HYDROXY-3-IODOPHENOXY)-3,5-DIIODOPHENYL]PROPIONATE;T3 SODIUM SALT;T3, NA;O-[4-HYDROXY-3-IODOPHENYL]-3,5-DIIODO-L-TYROSINE SODIUM SALT;LIOTHYR MF: C15H11I3NNaO4 MW: 672.96 Formula: LIOTHYRONINE SODIUM Usage: Liothyronine is a form of thyroid hormone used to treat hypothyroidism and myxedema coma.