TB-500

Research Use OnlyThymosin Beta-4Tβ4TB4Thymosin β4

A 43-amino acid synthetic fragment of thymosin beta-4 that regulates actin polymerization and promotes cell migration in preclinical research. Premium Research Peptide.

$39.99

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Verified Test Results

Every batch, independently verified.

Each batch is analyzed by an ISO/IEC 17025 accredited third-party laboratory. The report below reflects the identity, purity and full-panel specification data released with this product.

ILSILS Laboratories

Certificate of Analysis

99%

Purity by HPLC

ISO 17025 Accredited8× Tested
ParameterResultSpecification
AppearanceGoodMeets spec
Purity99.51% · Pass≥ 95%
Net Peptide Content10.33mgReport
IdentityConfirmedMeets spec
Fentanyl ScreenNot DetectedPass
Heavy MetalsNot DetectedPass
SterilityNo GrowthPass
Endotoxin0.097 EU/mLReported

Representative report from lot TB0002 (TB-500). Your order ships with its own lot-specific certificate.

View this batch's certificate

Third-party verified

Certificate of Analysis

Every lot is HPLC-tested at an ISO/IEC 17025-accredited lab. Open any batch's certificate below.

TB-500 10mg

Latest

LOT TB0002

99.51%

HPLC purity · meets spec

Labeled
10mg
Measured
10.33mg
Identity
Confirmed
Heavy metals
Not Detected
Sterility
No Growth
Endotoxin
0.097 EU/mL
Tested
Jul 30, 2026

8 assays passed · ISO/IEC 17025 accredited

View certificate

TB-500 10mg

LOT TB0001

99.75%

HPLC purity · meets spec

Labeled
10mg
Measured
10.40mg
Identity
TB-500
Heavy metals
Not Detected
Sterility
No Growth
Endotoxin
< 0.05 EU/mL
Tested
May 29, 2026

7 assays passed · ISO/IEC 17025 accredited

View certificate

TB-500 10mg

LOT T0101

99.30%

HPLC purity · meets spec

Labeled
10mg
Measured
10.88mg
Tested
Feb 4, 2026

Compound Information

Technical specifications

Molecular Profile

What Is TB-500?

TypeEndogenous peptide/synthetic analog
CAS Number77591-33-4
Molecular Weight4,963 Da
Amino Acids43
Active RegionAc-SDKP (N-terminal)
Key Sequence17LKKTET22 (actin binding)
Expert Opin Biol Ther (2012)
Storage Requirements

Stability Information

Protect from lightStore desiccatedSterile handling
Lyophilized (powder)
-20°Cstable long-term
Reconstituted
2-8°C
Avoid
Repeated freeze-thaw cycles

Sources & References

Peer-reviewed research

Expert Opinion on Biological Therapy

Thymosin β4: a multi-functional regenerative peptide. Basic properties and clinical applications

2012DOI: 10.1517/14712598.2012.634793PMID: 22074294

Goldstein AL, Hannappel E, Sosne G, Kleinman HK

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Annals of the New York Academy of Sciences

A randomized, placebo-controlled, single and multiple dose study of intravenous thymosin beta4 in healthy volunteers

2010DOI: 10.1111/j.1749-6632.2010.05474.xPMID: 20536472

Ruff D, Crockford D, Girardi G, Zhang Y

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Journal of the Neurological Sciences

A Dose Response Study of Thymosin β4 for the Treatment of Acute Stroke

2014DOI: 10.1016/j.jns.2014.07.006PMID: 25060418

Morris DC, Cui Y, Cheung WL, Lu M, Zhang L, Zhang ZG, Chopp M

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Journal of Investigative Dermatology

Thymosin beta4 accelerates wound healing

1999DOI: 10.1046/j.1523-1747.1999.00708.xPMID: 10469335

Malinda KM, Sidhu GS, Mani H, Banaudha K, Maheshwari RK, Goldstein AL, Kleinman HK

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International Journal of Molecular Sciences (PMC)

Progress on the Function and Application of Thymosin β4

2021DOI: 10.3390/ijms222413136

Xing Y, et al.

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Nature

Thymosin beta4 activates integrin-linked kinase and promotes cardiac cell migration, survival and cardiac repair

2004DOI: 10.1038/nature03000PMID: 15565145

Bock-Marquette I, Saxena A, White MD, Dimaio JM, Srivastava D

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Clinical Ophthalmology

Thymosin beta 4 ophthalmic solution for dry eye: a randomized, placebo-controlled, Phase II clinical trial

2015DOI: 10.2147/OPTH.S80954PMID: 26056426

Sosne G, Ousler GW

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Neuroscience

Thymosin beta4 improves functional neurological outcome in a rat model of embolic stroke

2010DOI: 10.1016/j.neuroscience.2010.05.017PMID: 20627173

Morris DC, Chopp M, Zhang L, Lu M, Zhang ZG

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Journal of Neurosurgery

Treatment of traumatic brain injury with thymosin beta4 in rats

2010DOI: 10.3171/2010.4.JNS10118PMID: 20486893

Xiong Y, Mahmood A, Meng Y, Zhang Y, Zhang ZG, Morris DC, Chopp M

View Source
Nature

Thymosin beta4 induces adult epicardial progenitor mobilization and neovascularization

2007DOI: 10.1038/nature05383PMID: 17108969

Smart N, Risebro CA, Melville AA, Moses K, Schwartz RJ, Chien KR, Riley PR

View Source

Important Research Notice

Not for human consumption. This product is sold exclusively for research and educational purposes. It is not intended to diagnose, treat, cure, or prevent any disease.

All clinical trial data and research findings presented on this page are sourced from peer-reviewed journals and official publications. They are provided for educational reference only and should not be interpreted as medical advice or product claims.

By purchasing this product, you confirm that you are a qualified researcher and will use it in accordance with all applicable laws and regulations.

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