L-Thyroxine, Purity ≥98%

Synonym: 51-48-9; Levothyroxine; Thyroxine; Thyroxin; Levothyroxin; Tetraiodothyronine; 3,3',5,5'-Tetraiodo-L-thyronine; Thyratabs; Thyreoideum; Thyroxinal; Thyrax; Synthroid; Thyroxine iodine; L-Thyroxin; L-T4; 3,5,3',5'-Tetraiodo-L-thyronine; (2S)-2-Amino-3-[4-(4-hydroxy-3,5-diiodophenoxy)-3,5-diiodophenyl]propanoic acid

MDL: MFCD00002595
CAS Number: 51-48-9
Compound CID: 5819

Product Size

500 mg; 1 g; 2 g; 5 g

Price

Datasheet

MSDS

Properties

Description

L-Thyroxine, soluble in DMSO and insoluble in water and ethanol, is a synthetic form of the thyroid hormone thyroxine. The molecular weight of the compound is 776.87, and its molecular formula is C₁₅H_11I4NO₄.

Molecular Weight

776.87

Molecular Formula

C₁₅H_11I4NO₄

Form

Lyophilized powder

Purity

Impurities

Free from inappropriate visible particulates, foreign matter, discoloration, or other defects.

Solubility

In vitro: DMSO: 96 mg/mL (123.57 mM); Water: insoluble; Ethanol: insoluble

Identity

Confirmed by NMR/HPLC/MS.

Applications

L-Thyroxine plays a key role in inhibiting the overproduction of thyroid-stimulating hormone (TSH) through negative feedback on the hypothalamus and pituitary gland.