For laboratory research use only — not for human or veterinary use. Not evaluated by the U.S. FDA.
Cellular Peptide
TB-500
A 43-amino-acid fragment of thymosin beta-4 studied in preclinical models for actin regulation and cell migration during tissue repair.
Quantity
$39.99
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Delivery
Order by 3:00 PM ET for same-day dispatch
Cutoff 3:00 PM ET · same-day dispatch
Estimated arrival in 2–3 business days
Overnight shipping available
Free shipment protection included
TB-500
1 × 10mg · $39.99
99% purity, QC passed
HPLC + mass-spec verified
Shipment protection
Free on every order
Free shipping over $150
Same-day dispatch before 3PM ET
Certificate of Analysis
Third-party tested · Independent analytical lab
10mg
99.12%latest
| Tested | Measured | Purity |
|---|---|---|
| Jul 2026Sterile | 11.77mg | 99.12% |
| Jun 2026 | 11.62mg | 98.81% |
| Jun 2026 | 11.64mg | 98.60% |
| May 2026 | 11.80mg | 99.02% |
| Apr 2026 | 11.99mg | 99.77% |
| Apr 2026 | 11.75mg | 99.89% |
| Mar 2026 | 11.87mg | 99.82% |
| Mar 2026 | 11.39mg | 99.81% |
| Feb 2026 | 11.35mg | 99.61% |
| Dec 2025 | 11.87mg | 99.87% |
Latest safety testing
- Sterility
- TAMC/TYMCJul 2026
Endotoxin, sterility, and heavy-metals reports are run on individual lots on a rotating basis, separate from the identity/purity assay above — not on every lot.
Frequently researched together
Commonly studied alongside TB-500.
Compound information
Technical specifications
Molecular profile
| Type | Endogenous peptide/synthetic analog |
| CAS number | 77591-33-4 |
| Molecular weight | 4,963 Da |
| Amino acids | 43 |
Storage & stability
- ❄️
Lyophilized (powder)
-20°C · stable 2+ years
- ❄️
Reconstituted
2–8°C · use within 30 days
Sources & references
Peer-reviewed literature, for research context
- Expert Opinion on Biological Therapy
Thymosin β4: a multi-functional regenerative peptide. Basic properties and clinical applications
2012·DOI: 10.1517/14712598.2012.634793·PMID: 22074294Goldstein AL, Hannappel E, Sosne G, Kleinman HK
View source - Annals of the New York Academy of Sciences
A randomized, placebo-controlled, single and multiple dose study of intravenous thymosin beta4 in healthy volunteers
2010·DOI: 10.1111/j.1749-6632.2010.05474.x·PMID: 20536472Ruff D, Crockford D, Girardi G, Zhang Y
View source - Journal of the Neurological Sciences
A Dose Response Study of Thymosin β4 for the Treatment of Acute Stroke
2014·DOI: 10.1016/j.jns.2014.07.006·PMID: 25060418Morris DC, Cui Y, Cheung WL, Lu M, Zhang L, Zhang ZG, Chopp M
View source - Journal of Investigative Dermatology
Thymosin beta4 accelerates wound healing
1999·DOI: 10.1046/j.1523-1747.1999.00708.x·PMID: 10469335Malinda KM, Sidhu GS, Mani H, Banaudha K, Maheshwari RK, Goldstein AL, Kleinman HK
View source - Frontiers in Endocrinology
Progress on the Function and Application of Thymosin β4
2021·DOI: 10.3389/fendo.2021.767785·PMID: 34992578Xing Y, et al.
View source - Nature
Thymosin beta4 activates integrin-linked kinase and promotes cardiac cell migration, survival and cardiac repair
2004·DOI: 10.1038/nature03000·PMID: 15565145Bock-Marquette I, Saxena A, White MD, Dimaio JM, Srivastava D
View source - Clinical Ophthalmology
Thymosin beta 4 ophthalmic solution for dry eye: a randomized, placebo-controlled, Phase II clinical trial
2015·DOI: 10.2147/OPTH.S80954·PMID: 26056426Sosne G, Ousler GW
View source - Neuroscience
Thymosin beta4 improves functional neurological outcome in a rat model of embolic stroke
2010·DOI: 10.1016/j.neuroscience.2010.05.017·PMID: 20627173Morris DC, Chopp M, Zhang L, Lu M, Zhang ZG
View source
Important research notice
Not for human consumption. This product is sold exclusively for laboratory and in vitro research. It is not intended to diagnose, treat, cure, or prevent any disease.
Any research findings referenced on this page are drawn from published, peer-reviewed literature and are provided for educational context only. They are not product claims and should not be read as medical advice.
By purchasing, you confirm you are a qualified researcher and will handle this material in accordance with all applicable laws and institutional guidelines.