Skip to Content
Merck

T3787

3,3′,5,5′-Tetraiodothyroacetic acid

≥98% (TLC), powder, thyrointegrin receptor antagonist

Synonym(s):

4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzeneacetic acid, Tetrac

Sign In to View Organizational & Contract Pricing.

Select a Size

About This Item

Linear Formula:
C14H8O4I4
CAS Number:
67-30-1
Molecular Weight:
747.83
NACRES:
NA.77
PubChem Substance ID:
24900169
UNSPSC Code:
12352106
EC Number:
200-649-1
MDL number:
MFCD00055932

Key Documents

View All Documentation
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist
Technical Service
Need help? Our team of experienced scientists is here for you.
Let Us Assist

Product Name

3,3′,5,5′-Tetraiodothyroacetic acid,

InChI key

PPJYSSNKSXAVDB-UHFFFAOYSA-N

InChI

1S/C14H8I4O4/c15-8-4-7(5-9(16)13(8)21)22-14-10(17)1-6(2-11(14)18)3-12(19)20/h1-2,4-5,21H,3H2,(H,19,20)

SMILES string

OC(=O)Cc1cc(I)c(Oc2cc(I)c(O)c(I)c2)c(I)c1

solubility

acetone: soluble 19.60-20.40 mg/mL, clear, colorless (or faintly yellow to yellow)

storage temp.

−20°C

Quality Level

200

Related Categories

Application

3,3′,5,5′-Tetraiodothyroacetic acid has been used:
  • as a positive control to study the effects of ioxynil (IOX)
  • diethylstilbestrol (DES) exposure on zebrafish embryos
  • to study its effects on long-term potentiation (LTP) and long-term depression (LTD) in the dentate gyrus in urethane-anesthetized male rats
  • to determine its influence on the actions of thyroid-stimulating hormone
  • thyroid-stimulating immunoglobulins in orbital fibroblast

Biochem/physiol Actions

3,3′,5,5′-Tetraiodothyroacetic acid (Tetrac) is a deaminated analog of L-thyroxine (T4). It prevents the pro-angiogenesis actions of T4 and 3,5,3′-triiodo-L-thyronine. It is a thyrointegrin receptor antagonist. Tetrac prevents the binding of thyroid hormones.
Studies in rats have reported that Tetrac may regulate TSH secretion under in vivo conditions1.

Preparation Note

3,3′,5,5′-Tetraiodothyroacetic acid is soluble in acetone at 19.60 - 20.40 mg/ml and yields a clear, faint yellow to yellow solution.

Other Notes

Thyroid hormone analog

pictograms

Skull and crossbones
GHS06

signalword

Danger

hcodes

H300

Hazard Classifications

Acute Tox. 2 Oral

Storage Class

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

wgk

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P3 (EN 143) respirator cartridges

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
0000454819
0000454819
0000432998
0000432998
0000415106

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

Paul J Davis et al.
Annual review of pharmacology and toxicology, 51, 99-115 (2010-09-28)
Plasma membrane integrin αvβ3 is a cell surface receptor for thyroid hormone at which nongenomic actions are initiated. L-thyroxine (T₄) and 3,3',5-triiodo-L-thyronine (T₃) promote angiogenesis and tumor cell proliferation via the receptor. Tetraiodothyroacetic acid (tetrac), a deaminated T₄ derivative, blocks
Tetrac and NDAT induce Anti-proliferation via Integrin alphavbeta3 in Colorectal Cancers with Different K-RAS Status
Chin YT, et al.
Frontiers in Endocrinology, 10, 130-130 (2019)
Synthesis of new analogs of tetraiodothyroacetic acid (tetrac) as novel angiogenesis inhibitors for treatment of cancer
Rajabi M, et al.
Bioorganic & Medicinal Chemistry Letters, 28(7), 1223-1227 (2018)
Elevated serum tetrac in Graves disease: potential pathogenic role in thyroid-associated ophthalmopathy
Fernando R, et al.
The Journal of clinical endocrinology and metabolism, 102(3), 776-785 (2016)
Erik de Vrieze et al.
Endocrinology, 155(6), 2320-2330 (2014-04-04)
Allan-Herndon-Dudley syndrome (AHDS) is an inherited disorder of brain development characterized by severe psychomotor retardation. This X-linked disease is caused by mutations in the monocarboxylate transporter 8 (MCT8), an important thyroid hormone transporter in brain neurons. MCT8-knockout mice lack the
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service