For laboratory research use only. Not for human or veterinary use. Must be 21+.
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Launch batch: pre-orders ship by October 10, after each batch's certificate of analysis is posted. Full refund if we miss the date.
Single peptideBPC-157 & thymosin peptidesPre-order

TB-500

Synthetic thymosin beta-4, a 43-amino-acid actin-binding peptide.

$59$5.90/mg
  • Form: lyophilized (freeze-dried) powder, sealed vial
  • Certificate of analysis: batch 026-A87-TSX, HPLC purity 99.0% — view PDF
  • Shipping: pre-orders ship by October 10 from the USA · free over $150
  • Payment: Cash App, PayPal, Venmo, Coinbase or Bitcoin — how it works

For laboratory research use only. Not for human or veterinary use.

Compound identity

CompoundFormulaMol. weightCASPubChem
TB-500 C212H350N56O78S 4963 g/mol 77591-33-4 CID 16132341

Reference identity data from PubChem where listed. Each batch's purity data is on its certificate of analysis on the lab results page.

Research overview

TB-500 is sold as synthetic thymosin beta-4 (INN: timbetasin), a 43-amino-acid peptide.

Research has examined thymosin beta-4 in cell and animal models of connective tissue and corneal injury, including its role in fibrosis signaling 12. It is one of six peptides reviewed in a 2026 American Journal of Sports Medicine paper 3.

References

  1. Thymosin beta4 and the anti-fibrotic switch. Int Immunopharmacol, 2023. PubMed 36580759
  2. Protection effect of thymosin beta4 on ethanol injury in corneal stromal keratocyte. BMC Ophthalmol, 2022. PubMed 35062902
  3. Peptide Supplements and Their Therapeutic Applications in Sports Medicine. Am J Sports Med, 2026. PubMed 42578445

Also searched as: TB500, Thymosin Beta-4.

Storage

Store sealed vials cold, dry and away from light. Lyophilized peptides are typically kept at −20 °C for long-term storage.

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