TB-500 peptide
Buy TB-500 for €76.90
Janoshik report in progress10 mgIn stock
30-day returns
Changed your mind? Return sealed vials within 30 days for a full refund.
Details in the refund policy.
- Ships to Ireland · 4–6 business days€9.90 shipping
- Sealed packagingstandard carton · sealed, cold-packed
Research use only. Not for human or veterinary use. Not evaluated by any health authority (EMA or other). Not intended to diagnose, treat, cure or prevent any disease.
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After you order
Order timeline, step by step
Next
Packed
Sealed vials, cold-packed.
Then
Shipped
tracked, from the EU
Handed to the carrier. The tracking link lands in your inbox.
Estimated
Delivered
4–6 business days
At your door, in a standard sealed carton.
If nothing moves for 48 hours, reply to your confirmation e-mail: a person reads it and chases the carrier for you.
Refund policy →OXpeptides vs others
OXpeptidesOthersSpecifications
TB-500 is a synthetic fragment of thymosin beta-4 used in laboratory research. OXpeptides supplies it lyophilized in sealed 10, 20 and 30 mg vials, HPLC purity above 99%, with the Janoshik report per size in the lab. Delivery across Europe takes 4-6 business days. It is offered in 3 sizes: 10 mg (€76.90), 20 mg (€122.90), 30 mg (€174.90).
How to read the lab report and check it yourself: Janoshik test report.
Purity spec
>99% HPLC
Temperature
−20 °C, sealed (short term ≤ 4 weeks: 2 to 8 °C)
Shelf life
24 months (lyophilized, sealed)
Keep sealed, protected from light and moisture
In the literature
TB-500 is a synthetic peptide of the thymosin beta-4 (Tβ4) family, supplied as a lyophilized powder in a sealed vial; the exact mass of each batch is stated on its certificate of analysis.
Publications in Nature, FASEB Journal and the Journal of Biological Chemistry document thymosin beta-4 and its actin-binding sequence in cell-biology models.
Scientific data
TB-500 — identity, literature and limits
Sequence
Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln (Ac-LKKTETQ)
| Systematic name | N-acetyl-L-leucyl-L-lysyl-L-lysyl-L-threonyl-L-glutamyl-L-threonyl-L-glutamine |
|---|---|
| Synonyms and research codes | TB-500 · TB500 · Ac-LKKTETQ · thymosin β4 (17–23) · actin-binding motif of thymosin β4 |
| Chain length | 7 residues (heptapeptide), N-terminally acetylated |
| Molecular formula | C38H68N10O14 |
| Molar mass | 889.0 g/mol |
| CAS number | 885340-08-9 |
| PubChem CID | 62707662 |
| Origin of the sequence | A synthetic fragment corresponding to a short internal segment of thymosin β4, a 43-residue protein chemically characterized in 1982. The 43-residue protein itself is not supplied — only the 7-residue fragment, made by solid-phase synthesis. |
| Form and container | Lyophilized powder, white to off-white, in a sealed borosilicate vial. |
| Diluent | Sterile or bacteriostatic water. The acetylated heptapeptide is water-soluble; swirl until clear. |
| Storage | −20 °C sealed, away from light and moisture. 2 to 8 °C for four weeks or less. |
What has been studied
- Thymosin β4 was chemically characterized as a 43-residue protein and published in 1982. [1]
- In 1991 it was shown to be indistinguishable from the actin-sequestering peptide then called Fx. [2]
- In 2012 TB-500 was defined in an analytical chemistry paper as a synthetic version of an active region of thymosin β4, and detected by liquid chromatography–mass spectrometry in equine urine and plasma. [3]
- Its metabolites were quantified in 2024 by UHPLC-Q-Exactive Orbitrap MS/MS. [4]
What is not established
TB-500 is not thymosin β4. The large published record built on the 43-residue protein does not transfer to this 7-residue fragment, and treating the two as interchangeable is not supported by any source above.
No controlled study in people has been published on the acetylated heptapeptide itself.
Published research (mainly in vitro / animal)
- [1]Chemical characterization of thymosin beta 4. Journal of Biological Chemistry, 1982.
- [2]Thymosin beta 4 and Fx, an actin-sequestering peptide, are indistinguishable. Journal of Biological Chemistry, 1991.
- [3]Doping control analysis of TB-500, a synthetic version of an active region of thymosin β4, in equine urine and plasma by liquid chromatography-mass spectrometry. Journal of Chromatography A, 2012.
- [4]Simultaneous quantification of TB-500 and its metabolites in in-vitro experiments and rats by UHPLC-Q-Exactive orbitrap MS/MS and their screening by wound healing activities in-vitro. Journal of Chromatography B, 2024.
- [5]Thymosin beta4: structure, function, and biological properties supporting current and future clinical applications. Annals of the New York Academy of Sciences, 2010.
The references above are published scientific literature, listed so that the record can be read at the source. They describe what was measured in the systems named in each paper. They are not claims about this product and not a comparison with any drug. Research use only — not for human or veterinary use.
Questions about TB-500
About OXpeptides
Who we are
OX RESEARCH LTD operates OXpeptides. Company number 17464288 (England and Wales). We supply lyophilized research peptides in sealed glass vials, and one laboratory diluent, to researchers and laboratories.
How we work
Our reports come from Janoshik Analytical, one per size: HPLC purity and mass-spectrometry identity. Each report is published on the product page with its date as soon as the laboratory returns it; a product whose report is not back says so, in those words, rather than borrowing figures from elsewhere. Every vial is crimp-sealed and carries the compound name and the net quantity in milligrams; each report is published with its task number and verification key. Orders ship from the warehouse that serves the delivery address, tracked.
Who we sell to
Researchers and laboratories. Three things we do not do: we publish no quantities, no routes and no schedules anywhere on this site, and support declines those questions; we publish no certificate we do not hold; and we publish no customer review that does not come from a verified order.
The full entity record, the testing method step by step and what the company does not do are on the About page.