3,3′,5,5′-Tetraiodothyroacetic acid
3,3′,5,5′-Tetraiodothyroacetic acid (CAS: 67-30-1), with the molecular formula C<sub>14</sub>H<sub>8</sub>O<sub>4</sub>I<sub>4</sub> and a molecular weight of 747.83, is a chemical compound relevant to cell biology and hormone research. This substance has been utilized in studies investigating the regulation of TSH secretion. Available from Tech Serve Solutions, it is supplied for research and development purposes.
- IUPAC
- 4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzeneacetic acid,Tetrac
- Synonyms
- 5′-Tetraiodothyroacetic acidTetrac4-(4-Hydroxy-3,5-diiodophenoxy)-3,5-diiodobenzeneacetic acid

Hormone Research
3,3′,5,5′-Tetraiodothyroacetic acid is used in studies related to thyroid hormones and their regulation. Research indicates its potential role in modulating TSH secretion.
Cell Signaling Studies
The compound serves as a tool in cell biology, particularly in understanding cellular responses and signaling pathways influenced by hormonal factors.
Biochemical Investigations
It is employed in biochemical assays and experiments designed to elucidate the mechanisms of hormone action and interaction within biological systems.
| Molecular weight | 747.83 |
|---|---|
| Linear formula | C14H8O4I4 |
| Solubility | acetone: soluble19.60 - 20.40 mg/mL, clear, faintly yellow to yellow |
| Storage temperature | −20°C |
| Application | Studies in rats have reported that Tetrac may regulate TSH secretion under in vivo conditions1. |

Hazard statements
- H300Fatal if swallowed
Precautionary statements
- P264Wash thoroughly after handling
- P301IF SWALLOWED
| Protective equipment | Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 2811 6.1 / PGI |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | T+ |
| Risk statements (R) | 28 |
| Safety statements (S) | 45 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 3,3′,5,5′-Tetraiodothyroacetic acid used for?
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3,3′,5,5′-Tetraiodothyroacetic acid is used in research, particularly in studies investigating the regulation of TSH secretion and in cell biology research.
What is the CAS number and formula for 3,3′,5,5′-Tetraiodothyroacetic acid?
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The CAS number for 3,3′,5,5′-Tetraiodothyroacetic acid is 67-30-1 and its linear formula is C<sub>14</sub>H<sub>8</sub>O<sub>4</sub>I<sub>4</sub>.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies this chemical for research and development purposes. The specific grade and purity are available upon request. Tech Serve Solutions does not represent this product as USP, BP, or EP grade.
How should 3,3′,5,5′-Tetraiodothyroacetic acid be handled?
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3,3′,5,5′-Tetraiodothyroacetic acid is classified as Danger (GHS06) with hazard statement H300 (Fatal if swallowed). Appropriate personal protective equipment, including eyeshields, face shields, gloves, and suitable respiratory protection (e.g., full-face particle respirator type N100 or P3 filters), is mandatory. Handle with extreme caution in a well-ventilated area.
Is 3,3′,5,5′-Tetraiodothyroacetic acid a controlled substance?
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The provided data does not indicate that 3,3′,5,5′-Tetraiodothyroacetic acid is a controlled substance.
How is this chemical packed and shipped?
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This chemical is typically stored at -20°C. Shipping and packaging details are handled according to international regulations for hazardous materials. Tech Serve Solutions is a specialist global supplier and exporter of fine chemicals.
How can I request a sample or quote for 3,3′,5,5′-Tetraiodothyroacetic acid?
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To request a sample or quote, please contact our sales department via the website or direct email, providing your specific requirements.
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