Levothyroxine Sodium, USP

Molecular Formula
C15H10I4NO4Na•xH2O
Catalog Number
T1281
Supplier/Brand
Spectrum Chemical
CAS Number
25416-65-3

Levothyroxine Sodium, USP is a synthetic thyroid hormone that is used to treat thyroid hormone deficiency or to prevent thyroid cancer. All Spectrum Chemical USP grade products are manufactured, packaged and stored under current Good Manufacturing Practices (cGMP) per 21CFR part 211 in FDA registered and inspected facilities.


Synonyms: Monosodium L-Thyroxine ; Sodium Levothyroxine ; L-Thyroxine Sodium Salt ; Sodium 4-O-(4-Hydroxy-3,5-di-iodophenyl)-3,5-di-iodo-L-tyrosine ; 3,5,3,5-Tetra-iodo-L-thyronine Sodium

Shipping Information

Item must ship on ice via 2nd day air. During summer months, item will ship next day air. Additional freight charges will apply.


Tariff No. 2937401000

Storage Information

LIGHT SENSITIVE, REFRIGERATE: Keep tightly closed in light-resistant containers.

Certificates of Analysis

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2023