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Merck
CN

1365065

USP

Levothyroxine sodium

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

Levothyroxine sodium hydrate, 3,3′,5,5′-Tetraiodo-L-thyronine monosodium salt hydrate, L-Thyroxin monosodium salt hydrate, Sodium O-(4-hydroxy-3,5-diiodophenyl)-3,5-diiodo-L-tyrosine hydrate

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About This Item

Empirical Formula (Hill Notation):
C15H10I4NNaO4 · xH2O
CAS Number:
25416-65-3
Molecular Weight:
798.85 (anhydrous basis)
NACRES:
NA.24
PubChem Substance ID:
329750053
UNSPSC Code:
41116107
MDL number:
MFCD06408007

Key Documents

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Product Name

Levothyroxine sodium, United States Pharmacopeia (USP) Reference Standard

InChI

1S/C15H11I4NO4.Na.H2O/c16-8-4-7(5-9(17)13(8)21)24-14-10(18)1-6(2-11(14)19)3-12(20)15(22)23;;/h1-2,4-5,12,21H,3,20H2,(H,22,23);;1H2/q;+1;/p-1/t12-;;/m0../s1

SMILES string

O.[Na+].N[C@@H](Cc1cc(I)c(Oc2cc(I)c(O)c(I)c2)c(I)c1)C([O-])=O

InChI key

ANMYAHDLKVNJJO-LTCKWSDVSA-M

grade

pharmaceutical primary standard

API family

levothyroxine

manufacturer/tradename

USP

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

−20°C

Gene Information

human ... THRA(7067), THRB(7068)

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Analysis Note

These products are for test and assay use only. They are not meant for administration to humans or animals and cannot be used to diagnose, treat, or cure diseases of any kind.  ​

Application

Levothyroxine sodium USP reference standard, intended for use in specified quality tests and assays as specified in the USP compendia.

General description

This product is provided as delivered and specified by the issuing Pharmacopoeia. All information provided in support of this product, including SDS and any product information leaflets have been developed and issued under the Authority of the issuing Pharmacopoeia.For further information and support please go to the website of the issuing Pharmacopoeia.

Other Notes

Sales restrictions may apply.

pictograms

Health hazard
GHS08

signalword

Danger

hcodes

H372

Hazard Classifications

STOT RE 1

target_organs

Thyroid,Cardio-vascular system,Kidney

Storage Class

6.1C - Combustible acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

涉药品监管产品
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Mazen Lee Hamad et al.
Pharmaceutical development and technology, 20(3), 314-319 (2013-12-04)
Levothyroxine sodium is an important medication used primarily for treating patients with hypothyroidism. Levothyroxine sodium tablets have been recalled many times since their 1955 introduction to the US market. These recalls resulted from the failure of lots to meet their

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