Levothyroxine sodium

左甲状腺素钠

Also known as: Sodium levothyroxine, L-Thyroxine sodium salt hydrate, L-Thyroxine sodium, Levothyroxine sodium hydrate, Sodium (2S)-2-amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoate hydrate, O-(4-Hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine sodium salt hydrate, 3,5,3',5'-Tetraiodo-L-thyronine sodium salt

Levothyroxine sodium (CAS 25416-65-3) is a compound in the Organic Compounds category listed in the Jingsj chemical database. It has the molecular formula C15H12I4NNaO5 and a molecular weight of 816.867 g/mol. It is also known as Sodium levothyroxine, L-Thyroxine sodium salt hydrate and L-Thyroxine sodium. Key properties include a melting point of 207 °C, a boiling point of 576.3ºC at 760 mmHg and a flash point of 302.3ºC. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.
25416-65-3
Jingsj CID
J-37430-7
Molecular Formula
C15H12I4NNaO5
Chinese Name
左甲状腺素钠
Molecular Weight
816.867 g/mol
Category
Organic Compounds
Last updated
8/21/2026

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Physicochemical Properties

Melting Point207 °C
Boiling Point576.3ºC at 760 mmHg
Flash Point302.3ºC

Frequently Asked Questions

What is the CAS number of Levothyroxine sodium?

The CAS number of Levothyroxine sodium is 25416-65-3.

What are the molecular formula and molecular weight of Levothyroxine sodium?

Levothyroxine sodium has molecular formula C15H12I4NNaO5 and molecular weight 816.867 g/mol.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated:

How to cite: Jingsj. "Levothyroxine sodium (CAS 25416-65-3)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-37430-7 (accessed 2026-10-23).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.