TB-500 — a thymosin beta-4 related research peptide — studied in actin and cell-migration models.
TB-500 is a synthetic version of a fragment of thymosin β-4 — a 43-amino-acid protein your body naturally produces in most tissues. The full protein helps control how cells move during wound healing by binding to actin (a structural protein inside cells). What's sold as "TB-500" is often just a key active piece of the full molecule, not the whole thing. A pharmaceutical company (RegeneRx Biopharmaceuticals) tried to develop the full-length version (called RGN-352) as a real drug — testing it in heart failure and wound healing — but discontinued development before completing Phase 3 trials. What's sold online for "research" bears no FDA approval and no manufacturing oversight.
Keep lyophilized research material sealed, protected from light, and handled with standard laboratory controls. Follow internal SOPs for storage, reconstitution, labeling and disposal.
Not approved for human use
TB-500 is commonly represented as a thymosin beta-4 related fragment. PubChem indexes a TB-500 reference at CID 62707662 with formula C38H68N10O14, molecular weight 889.0 g/mol, and CAS 885340-08-9.
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Lyophilized peptides manufactured in GMP-certified facilities. No fillers, no shortcuts.
We display batch-level certificates of analysis (mass spec, HPLC purity) for all research-grade material.
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IMPORTANT: All products sold by Premium Peptides are intended for laboratory research only. They are not intended for human consumption, medical use, or as substitutes for prescription medications. These statements have not been evaluated by the FDA. These products are not intended to diagnose, treat, cure, or prevent any disease.