Liothyronine Sodium

• CAT Number: A000930
• CAS Number: 55-06-1
• Molecular Formula: C15H11I3NO4 • Na
• Molecular Weight: 672.30
• Purity: ≥95%
• Storage: -20°C
• IUPAC Name: sodium;(2S)-2-amino-3-[4-(4-hydroxy-3-iodophenoxy)-3,5-diiodophenyl]propanoate
• InChI: InChI=1S/C15H12I3NO4.Na/c16-9-6-8(1-2-13(9)20)23-14-10(17)3-7(4-11(14)18)5-12(19)15(21)22;/h1-4,6,12,20H,5,19H2,(H,21,22);/q;+1/p-1/t12-;/m0./s1
• InChIKey: SBXXSUDPJJJJLC-YDALLXLXSA-M
• SMILES: C1=CC(=C(C=C1OC2=C(C=C(C=C2I)C[C@@H](C(=O)[O-])N)I)I)O.[Na+]

Liothyronine sodium（Cat No.:A000930）is the synthetic form of triiodothyronine (T3), a thyroid hormone, with the molecular formula C15H11I3NNaO4. It is used to treat hypothyroidism, goiter, and as part of diagnostic testing for thyroid disorders. Liothyronine works by regulating metabolism, growth, and development through nuclear receptor activation, affecting protein synthesis and energy expenditure. It is rapidly absorbed and has a quicker onset of action compared to levothyroxine (T4), making it useful in certain clinical scenarios requiring rapid thyroid hormone response. Common side effects include palpitations, nervousness, and weight loss with overdosage. Careful dosage monitoring is essential.