For Research Use Only. Not for human consumption.
10mg
TB-500
- Form
- Lyophilised powder
- Launch formats
- 5mg, 20mg and 40mg vials
- Purity
- [Confirm against certificate of analysis]
- Molecular weight
- 4963.50 Da
- Molecular formula
- C212H350N56O78S
- CAS number
- 77591-33-4
- Class
- Synthetic peptide based on thymosin beta-4
- Also known as
- Thymosin beta-4 fragment (17-23)
Overview
TB-500 is a synthetic peptide based on thymosin beta-4, a naturally occurring 43-amino-acid protein found in most human and animal cells and present at high concentrations in wound fluid and blood platelets. Thymosin beta-4’s central biological role is binding actin, one of the main structural proteins of the cell, which is why it features so heavily in research on cell movement and tissue remodelling. The published literature described below concerns thymosin beta-4; the exact relationship between a given TB-500 preparation and the full native protein should be confirmed from the certificate of analysis.Mechanism in research
Thymosin beta-4 sequesters monomeric actin, regulating how the cell assembles its internal skeleton. Preclinical research has explored how this actin regulation may influence cell migration, blood vessel formation and inflammatory signalling in laboratory models. The published evidence is drawn from cell and animal studies rather than human trials.
Research applications
- Cell migration and motility assays
- Angiogenesis models
- Tissue remodelling and preclinical wound-healing studies
- Actin-binding and cytoskeleton research
Selected research
- Goldstein AL, Hannappel E, Kleinman HK. Trends in Molecular Medicine, 2005
- Malinda KM et al. Journal of Investigative Dermatology, 1999
- Smart N et al. Nature, 2007
Evidence status: In vitro and animal studies of thymosin beta-4.
Important: Research findings describe the studies cited and should not be interpreted as evidence that this product is suitable for human or veterinary use.
Studied alongside: BPC-157 (available combined in one vial), GHK-Cu, KPV
Supplied in sealed vials with HPLC purity testing and a downloadable certificate of analysis on this page.
- Shipping manifest
- Orders process in 1–3 business days
- Free ground shipping over $200
- Tracked, US-only delivery
- Packaging
- Individually sealed amber-glass vials
- Room-temperature stable in transit
- Batch and lot printed on every label
- Documentation
- 99%+ HPLC on the batch certificate
- US-synthesized, cGMP facility
- Certificate findable by batch number
Storage and handling
Where applicable, products are supplied as lyophilised (freeze-dried) powder in individually sealed glass vials; the format and quantity for each compound are stated on its product page. Storage information is provided according to the product documentation supplied with each material, and the storage conditions on the product page and certificate are the ones to follow. As general laboratory practice, keep vials sealed and protected from light and moisture, and avoid repeated freeze-thaw cycles once a material has been reconstituted. Reconstitution, and the choice of solvent and technique, is the responsibility of the purchasing researcher and depends on the requirements of the study. We do not provide preparation or administration guidance of any kind. [Build note: storage conditions must be supplier-verified per product, not published as a universal claim.]
What is in the vial
The named compound in the format stated on its product page, sealed in a glass vial, with nothing added beyond what the certificate of analysis states. [Confirm excipient position with the supplier: if vials contain mannitol or other bulking agents, the certificate and this copy must say so.]
Research use notice
This product is sold strictly for laboratory research. It is not intended for human ingestion, medical or veterinary use, cosmetic use, or any form of in-vivo application. By placing an order, the buyer confirms that the product will be handled by suitably qualified personnel, used solely for in-vitro research, and held in compliance with all laws and regulations that apply to the buyer.
[Build note: this block should appear above the fold on every product page, near the price and add-to-basket button, not buried at the foot of the page. Its position is part of the compliance story: it demonstrates the condition of sale was presented before purchase, not after.]
Legal and compliance
Every product sold by Proba Research is a laboratory reference material, supplied for in-vitro research use only. No product on this site is a medicine, a supplement, a food, or a cosmetic, and nothing on this site is approved for administration to humans or animals in any circumstances.
Purchases are accepted only on the basis of our Terms of Service. In placing an order, the buyer acknowledges and agrees that:
- The products will be used solely for legitimate in-vitro laboratory research.
- The products will be handled and stored only by persons qualified to work with research chemicals.
- The buyer is responsible for compliance with all laws and regulations that apply to the purchase, possession and use of research compounds in their jurisdiction.
- Proba Research accepts no liability for loss, injury or legal consequences arising from misuse, unauthorised use, or use contrary to these terms.
Orders that give us reason to believe the products are intended for anything other than laboratory research will be refused or cancelled.
[Legal note for Nick: this wording is drafted as marketing copy to a compliance standard, not as legal advice. Have a solicitor review this block, the Terms of Service and the RUO disclaimer page together before launch so all three say the same thing. Two additions worth making at build stage: a tick-box acknowledgement of these terms at checkout, and a link from this block to the full disclaimer page. Both strengthen the legal position and high-risk payment gateways commonly expect to see them during merchant review.]