$69.99 - $119.99 $35.00 - $60.00 50% off with code LAUNCH50
For laboratory research use only. Not for human or animal use. Not for diagnostic, therapeutic, or cosmetic purposes. Third-party COAs available.
For laboratory research use only. Not for human or animal use. 21+.
| Size | 5 mg, 10 mg |
|---|---|
| CAS Number | 77591-33-4 |
| Molecular Formula | C212H350N56O78S |
| Molecular Weight | 4963.4 g/mol |
| Form | Lyophilized powder |
| Quantity | 5 mg / 10 mg |
TB-500 is the synthetic form of thymosin β4, a 43-amino-acid, actin-sequestering peptide present in most mammalian cells and in platelets. Its primary biochemical role is binding monomeric G-actin, which places it at the center of cytoskeletal-dynamics and cell-migration research.
In cell and animal models thymosin β4 has been studied for endothelial migration, angiogenesis, and the cellular cascades that follow tissue injury; Goldstein and Kleinman review the pathways underlying its regenerative activity and the experimental systems in which they were characterized.
Supplied as lyophilized powder, 5 mg or 10 mg per vial. Store sealed vials at 2–8 °C for short-term holding and at −20 °C for long-term storage, protected from light and moisture.
Current certificate of analysis (PDF): 10 mg, lot 20250321.
Mechanism, model systems and the PubMed-cited studies for this compound are summarized in the Tissue-Repair Peptides section of the Research Library. Every tested lot’s HPLC purity result is filed on the Certificates of Analysis page, and our Testing and Quality page explains what those certificates do and do not show.
For laboratory research use only. Not for human or animal use. Not for diagnostic, therapeutic, or cosmetic purposes. Third-party COAs available; match the lot number on the vial to the certificate before the material enters an assay.
Every lot Liv Pure ships is tested by an independent laboratory before release. The certificate of analysis reports chromatographic purity (HPLC) for that specific lot, and the current certificates for this compound are linked at the end of the description above, and every lot Liv Pure ships is listed on the Certificates of Analysis page. Match the lot number printed on the vial to the certificate before the material enters an assay. If a lot you hold is not listed, request its certificate from support@livpurewellness.com.






Liv Pure supplies research-grade synthetic peptides and laboratory reagents to qualified researchers and institutions. Third-party COAs available.
Research Use Only • Third-party COAs • Ships From the USA
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All products provided by Liv Pure are intended solely for in-vitro laboratory research purposes. These materials are expressly forbidden for any form of human or animal use, ingestion, or administration, and all products are sold strictly for research, laboratory, or analytical purposes, not for human consumption. The products offered on this site are not formulated, designed, or intended to diagnose, cure, mitigate, treat, or prevent any disease or medical condition, and these statements have not been evaluated by the Food and Drug Administration. Liv Pure is a chemical supplier; it is not a compounding pharmacy or chemical compounding facility as defined under Section 503A of the Federal Food, Drug, and Cosmetic Act, nor an outsourcing facility as defined under Section 503B of the Act.
Liv Pure supplies synthetic peptides and reagents for in-vitro laboratory research. Products are not for human or animal use and are sold only to purchasers who are at least 21 years of age and qualified to handle research chemicals.