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Liothyronine

Name: Liothyronine
Brand: USP
Price: 501 USD
Availability: InStock

United States Pharmacopeia (USP) Reference Standard

Synonym(s):

3,3′,5-Triiodo-L-thyronine, O-(4-Hydroxy-3-iodophenyl)-3,5-diiodo-L-tyrosine, Liothyronine, T₃

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Size/SKU	Availability	Price
250 mg	Estimated to ship onSeptember 08, 2026fromMILWAUKEE	$501.00

About This Item

Empirical Formula (Hill Notation):

C₁₅H₁₂I₃NO₄

CAS Number:

6893-02-3

Molecular Weight:

650.97

UNSPSC Code:

41116107

NACRES:

NA.24

PubChem Substance ID:

329750059

MDL number:

MFCD00002593

Beilstein/REAXYS Number:

2710227

$501.00

Estimated to ship onSeptember 08, 2026Details

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Properties

grade

pharmaceutical primary standard

agency

USP

API family

liothyronine

manufacturer/tradename

USP

mp

234-238 °C (lit.)

application(s)

pharmaceutical (small molecule)

format

neat

storage temp.

2-8°C

SMILES string

N[C@@H](Cc1cc(I)c(Oc2ccc(O)c(I)c2)c(I)c1)C(O)=O

InChI

1S/C15H12I3NO4/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)/t12-/m0/s1

InChI key

AUYYCJSJGJYCDS-LBPRGKRZSA-N

Gene Information

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

Description

General description

Find answers to frequently asked questions on USP products in USP FAQs.

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.

Application

Liothyronine USP reference standard for use in specified quality tests and assays.

Also used to prepare standard, standard stock, Liothyronine stock, and resolution solutions for assay, and identification test according to given below monographs of the United States Pharmacopeia (USP):

Thyroid
Levothyroxine Sodium Tablets
Liothyronine Sodium Tablets

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.

Other Notes

Sales restrictions may apply.

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This Item	PHR1504	T2877	L0700000
USP 1368008 Liothyronine	Supelco PHR1504 Liothyronine	Sigma-Aldrich T2877 3,3′,5-Triiodo-L-thyronine	L0700000 Liothyronine sodium
description United States Pharmacopeia (USP) Reference Standard	description Pharmaceutical Secondary Standard; Certified Reference Material	description ≥95% (HPLC), powder	description European Pharmacopoeia (EP) Reference Standard
grade pharmaceutical primary standard	grade pharmaceutical secondary standard, certified reference material	grade -	grade pharmaceutical primary standard
manufacturer/tradename USP	manufacturer/tradename -	manufacturer/tradename -	manufacturer/tradename EDQM
application(s) pharmaceutical (small molecule)	application(s) pharmaceutical (small molecule)	application(s) -	application(s) pharmaceutical (small molecule)
format neat	format -	format -	format neat
Gene Information human ... THRA(7067), THRB(7068)	Gene Information human ... THRA(7067), THRB(7068)	Gene Information human ... THRA(7067), THRB(7068) rat ... Thra(81812), Thrb(24831)	Gene Information human ... THRA(7067), THRB(7068)
agency USP	agency traceable to USP 1368008	agency -	agency -

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pictograms

GHS08

signalword

Danger

hcodes

H372

pcodes

P260 - P264 - P270 - P314 - P501

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

flash_point_f

Not applicable

flash_point_c