In Stock
HPLC Purity≥99%
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4.4 / 5
Trustpilot⚠ Research Use Only
Not for human consumption, veterinary use, or clinical administration. Sold exclusively to qualified laboratories and researchers for in-vitro study.
What TB-500 is and its research context
TB-500 is a synthetic fragment of thymosin beta-4, a naturally occurring 43-amino-acid peptide present in nearly every mammalian cell type and found at high concentration in platelets and other circulating cells. The fragment supplied as TB-500 corresponds to the actin-binding region of the parent molecule, the LKKTETQ motif, which is the part of thymosin beta-4 responsible for sequestering monomeric G-actin.
TB-500 is studied in preclinical research on actin sequestration and polymerisation, cell migration, angiogenesis models and tissue-repair pathways. Because it is a short fragment rather than the full 43-amino-acid protein, it is simpler to synthesise and characterise, and it lets researchers isolate the actin-binding function from the rest of the molecule. Thymosin beta-4 and BPC-157 are examined for complementary mechanisms, so the two peptides are often used side by side in research, and myPEPT also offers them as a combined blend.
Specification and quality
- Format: 10 mg of lyophilised TB-500 per vial.
- Purity: ≥99%, verified per batch by HPLC and mass spectrometry.
- Certificate of analysis: issued by an independent third-party laboratory for every batch and published on the lab results page. The lot number on the certificate matches the vial.
- Storage: keep sealed vials cool, dry and protected from light; refrigerate reconstituted solution and follow your laboratory's procedures for shelf life.
To work out the concentration that a chosen volume of bacteriostatic water produces from a 10 mg vial, use the peptide reconstitution calculator.
Ordering from myPEPT in Ireland and Europe
TB-500 ships within Europe, including Ireland, and every parcel is tracked. Customers in Ireland can pay by card, PayPal, Klarna or SEPA transfer; other European countries see their local payment options at checkout. Our support team answers questions about batches, certificates and order status before and after purchase.
TB-500 is sold strictly for laboratory research use only and is not for human consumption. myPEPT makes no medical claims and does not give legal advice; buyers confirm at checkout that they are purchasing for research purposes and are responsible for compliance with the rules that apply to them.
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Frequently asked
11 questionsHow fast is delivery and which carriers do you use?
Orders placed before 16:00 CET ship the same business day from the Netherlands via DPD or PostNL. EU-wide delivery typically takes 2–5 working days, fully tracked. Every parcel ships in plain, unbranded packaging with no peptide-related markings visible.
Which payment methods do you accept?
We accept iDEAL (Netherlands), Bancontact (Belgium), Klarna pay-later, SEPA instant bank transfer, and Visa/Mastercard credit and debit cards. All payments are processed through PCI-DSS-compliant European processors. Bank transfer and card orders ship within 24 hours of payment confirmation.
How do you verify peptide purity?
Every batch is HPLC-tested to 99% purity or higher by an independent third-party laboratory, with identity confirmed by mass spectrometry. The batch-specific Certificate of Analysis is published on every product page and delivered with the order.
Are research peptides legal to buy in the Netherlands and EU?
Yes — when sold and purchased strictly for in-vitro laboratory research. Research peptides on my\PEPT.eu are not approved, marketed or intended for human or veterinary use, medical diagnosis or therapeutic application. By placing an order you confirm research-only intent and accept responsibility for compliance with local regulations.
How should research peptides be stored?
Lyophilized (freeze-dried) peptides keep up to 24 months at −20 °C in a sealed vial. Once reconstituted in bacteriostatic water, store at 2–8 °C and use within 28 days. Avoid repeated freeze-thaw cycles and direct sunlight.
What is TB-500?
TB-500 is a synthetic fragment of thymosin beta-4 that corresponds to the actin-binding region of the parent protein. It is studied in preclinical research on actin sequestration, cell migration and tissue-repair pathways. myPEPT supplies it as a 10 mg lyophilised research peptide for laboratory use only.
What is the difference between TB-500 and thymosin beta-4?
Thymosin beta-4 is the full 43-amino-acid protein found in most mammalian cells. TB-500 is a short synthetic fragment that reproduces its actin-binding motif, LKKTETQ. The fragment is easier to synthesise and characterise, which is why it is the form most often used in preclinical research.
How is TB-500 tested?
Every batch is analysed by an independent third-party laboratory using HPLC and mass spectrometry and must reach at least 99% purity. The certificate of analysis is published on our lab results page, and its lot number matches the lot number on the vial you receive.
How should TB-500 be stored?
Keep sealed vials cool, dry and protected from light until the laboratory is ready to reconstitute them. Once reconstituted with bacteriostatic water, refrigerate the solution and use it within the period defined by your laboratory's procedures. Note the reconstitution date and concentration on the label.
Can I order TB-500 in Ireland?
Yes. TB-500 ships within Europe, including Ireland, with tracking on every parcel. Customers in Ireland can pay by card, PayPal, Klarna or SEPA transfer. Our support team answers questions about batches and certificates before and after you order.
Is TB-500 sold for research use only?
No. TB-500 from myPEPT is sold strictly for laboratory research use only and is not for human consumption. We do not provide instructions for use in people, make no medical claims and do not give legal advice. Buyers are responsible for compliance with the rules that apply to them.
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For research use only. This product is intended exclusively for in-vitro research and laboratory applications. Not approved for human or animal consumption, medical treatment, or therapeutic use.
