TB-500 Research Peptide
TB-500 is a synthetic peptide made of seven amino acids, carrying a chemical cap known as an acetyl group.
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Research Use Only · Not for human or veterinary consumption.
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Certificates of Analysis
Every batch is tested by an independent laboratory before release.
Verify Batch. Lot-level COA, Batch PP/TBS/062026. Check the batch number printed on your vial against the certificate below, which reports the tests run on it.
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What is TB-500?
TB-500 is a synthetic peptide made of seven amino acids, carrying a chemical cap known as an acetyl group. Mass spectrometry has confirmed that the product contains this capped sequence, Ac-LKKTETQ. The sequence copies the part of a larger natural protein, thymosin beta-4, that binds actin. Actin is a protein involved in cell movement and structure, and that part of thymosin beta-4 has been identified as one of its several active sites. Research on the seven-amino-acid sequence, mostly without the cap, covers cell migration, new blood vessel growth and wound repair, and those results cannot be assumed to apply to the capped product. Research on the capped product itself covers how it is broken down and detected in the body, and in one study in cultured fibroblasts it did not significantly speed the closure of scratch wounds.
Product information reviewed by Dr. Martina Rossi, PhD
Scientific Contributor and Reviewer · Reviewed
TB-500 Research & Reference
What TB-500 does in published studies, and how to work with it in the laboratory, are covered in full on two dedicated pages rather than summarised here, so neither the evidence nor the handling detail is cut short.
Technical Specs
Labeled quantity is net peptide content, not gross salt weight.
TB-500 Batch Results
Batch PP/TBS/062026
- Laboratory
- Kovera Labs
- Certified
- July 30, 2026
- Sample
- 10 mg vial
- Report
- KVR-2026-8BCB7C
An independent laboratory, Kovera Labs, tested a sample from this batch. These are the results on its certificate.
Purity
Pass99.423%
RP-HPLC, C18 column, 214 nm
Identity
PassConfirmed
LC-MS
Purity is an HPLC figure: the main peak’s share of everything the detector recorded at one wavelength. It’s not a weight. What a purity figure counts →
Check it with the lab. Kovera Labs’ verification page looks a certificate up by its report number. Product, batch, date and results should match this page.
Chromatogram
RP-HPLC · C18 · DAD 214 nm
Frequently Asked Questions
Is TB-500 third-party tested for purity?+−
Yes. Every batch of TB-500 is tested by an independent third-party laboratory using HPLC and MS-UPLC, confirming purity and mass identity before the batch is released. Pure Peptides does not test its own material.
Can I see the Certificate of Analysis before buying?+−
Yes. The Certificate of Analysis for the batch currently in stock can be viewed and downloaded directly on this page, before you place an order. Each certificate states the batch number, the measured purity, and the date of analysis, and can be verified independently with the issuing laboratory using the report number it carries.
What does "Research Use Only" mean?+−
It means TB-500 is supplied for in-vitro laboratory research and for no other purpose, and must not be administered to humans or animals. TB-500 is legal to purchase in the United States for in vitro and non-clinical laboratory research. It carries no FDA approval or therapeutic indication for human use. TB-500 is not a scheduled substance under the Controlled Substances Act. Sold strictly for qualified research use, not human or veterinary administration.
How is TB-500 shipped and stored?+−
TB-500 ships from US stock with cold-chain packaging and full tracking; orders placed before noon EST on business days are typically dispatched the same business day. On arrival, store the lyophilized powder at -20°C or below, dry and protected from light.
Compare TB-500
Side-by-side pages that tell TB-500 apart from other compounds: how the two relate, which molecule the published evidence used, and whether they have been compared directly.
Regeneration Research
Related Compounds
Reviewed for scientific accuracy
Dr. Martina Rossi, PhD
PhD, Université Grenoble Alpes · Scientific Contributor and Reviewer
Dr. Rossi's doctoral research at Université Grenoble Alpes examined the vascular functions of bone morphogenetic proteins. Her peer-reviewed work spans cell and molecular biology, vascular biology, and gene therapy, in journals including Cardiovascular Research, Scientific Reports, and Brain Sciences. She reviews Pure Peptides' product, reference, and research pages for scientific accuracy against the sources they cite.