TB-500 is a synthetic peptide derived from a conserved 17-amino acid sequence of Thymosin Beta-4 (Tβ4), a ubiquitous actin-sequestering protein expressed in most nucleated mammalian cells. The peptide corresponds to the actin-binding domain of the full-length protein and is used in research to probe Tβ4’s biological activity at the cellular level independently of the intact protein.
Published in vitro studies have examined TB-500’s interaction with globular actin (G-actin) monomers, including its effect on actin polymerization dynamics and migration assays in cultured fibroblast and endothelial cell lines. Rodent-model research has employed TB-500 as a tool compound in wound-healing models examining re-epithelialization and angiogenesis-related gene expression.
Because Thymosin Beta-4 is expressed in platelets, T-cells, and various wound-site resident cells, TB-500 has become a commonly cited reference compound in research on actin dynamics and cytoskeletal signaling. PeptiFy Labs supplies TB-500 at 99%+ purity in lyophilized form, with batch-specific COA verification by independent third-party laboratories (Janoshik Analytical / Freedom Diagnostics).
For laboratory and research use only. Not for human or veterinary use.
Synthetic peptide derived from the actin-binding domain of Thymosin Beta-4. Supplied lyophilized at 99%+ purity — every batch third-party tested with COA.
$67.99 – $99.99Price range: $67.99 through $99.99
⚠️ NOT FOR HUMAN CONSUMPTION — RESEARCH USE ONLY ⚠️
All products sold by PeptiFy Labs are intended strictly for laboratory and scientific research purposes only. They are not intended as drugs, food additives, cosmetics, or household chemicals, and have not been evaluated or approved by the FDA. These substances have not been sterilized or tested for safety or efficacy in humans or animals. By purchasing, you certify that you are at least 21 years of age, a qualified researcher, familiar with the hazards associated with these compounds, and will handle them in accordance with all applicable local, state, and federal laws.



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⚠️ NOT FOR HUMAN CONSUMPTION — RESEARCH USE ONLY ⚠️
All products sold by PeptiFy Labs are intended strictly for laboratory and scientific research purposes only. They are not intended as drugs, food additives, cosmetics, or household chemicals, and have not been evaluated or approved by the FDA. These substances have not been sterilized or tested for safety or efficacy in humans or animals. By purchasing, you certify that you are at least 18 years of age, a qualified researcher, familiar with the hazards associated with these compounds, and will handle them in accordance with all applicable local, state, and federal laws.