Buy TB-500: The Gold Standard for Cellular Regeneration Research
In the realm of regenerative medicine and cellular biology, TB-500 (a synthetic fraction of the protein Thymosin Beta-4) has become a staple reagent. Its ability to influence cell migration and actin polymerization makes it a primary subject of study for laboratories investigating tissue repair and cardiac health.
If your research requires consistent, high-purity compounds, knowing where and how to buy TB-500 is critical. This guide outlines the mechanism of action of this peptide and the quality standards you must demand from your supplier.
What is TB-500?
TB-500 is a synthetic version of the naturally occurring peptide Thymosin Beta-4 (Tβ4). Specifically, it corresponds to the active region of the protein (amino acids 17-23), often referred to as the LKKTETQ sequence.
While full-length Thymosin Beta-4 is found in high concentrations in platelets and wound fluid, researchers buy TB-500 because the synthetic fragment retains the protein’s primary active properties while being easier to synthesize and store.
The Research Focus: Mechanism of Action
Why are labs across the globe studying TB-500? It comes down to three major biological interactions observed in animal and in-vitro models:
1. Upregulation of Actin
TB-500 binds to actin (a protein that forms the structure of cells). By sequestering G-actin, the peptide helps maintain a pool of actin monomers that cells can use to rebuild their cytoskeleton. This is vital for cell migration—the process by which cells move to a site of damage to begin repair.
2. Angiogenesis (Blood Vessel Formation)
Research suggests that TB-500 may promote the growth of new blood vessels (angiogenesis) and differentiate endothelial cells. This makes it a key compound in studies focused on ischemic damage and cardiac tissue recovery.
3. Inflammation Modulation
Current studies are observing how TB-500 interacts with inflammatory cytokines. Researchers are testing its ability to reduce fibrosis (scar tissue formation) in lung and heart tissue models.
How to Buy TB-500 Without Compromising Data
The peptide market is unregulated, and “bargain” peptides often contain fillers like mannitol or impurities from the synthesis process. To ensure your research results are reproducible, look for these three markers of quality:
1. The Purity Standard (>99%)
Cellular receptors are sensitive. If your TB-500 is only 95% pure, the remaining 5% consists of truncated peptide chains or chemical salts that can cause cell death or inflammation in your test subjects. Always verify the HPLC report to ensure 99%+ purity.
2. Molecular Mass Verification
Ensure your vendor provides Mass Spectrometry data. The molecular weight of TB-500 should be approximately 4963 g/mol (for full Tβ4) or 2904 g/mol (depending on if it is the fragment or full chain). Matching the weight confirms you are buying the correct molecule.
3. Stability (Lyophilized Powder)
TB-500 is water-soluble, but it degrades quickly in liquid form. Only buy TB-500 that is lyophilized (freeze-dried). This ensures the peptide structure remains intact during shipping and storage until you are ready to reconstitute it in the lab.
Why Researchers Choose Zen Peptides
At Zen Peptides, we understand that your data is only as good as your materials. We provide:
- USA-Based Quality Control: All batches are tested domestically.
- Transparent COAs: We display our testing data proudly.
- Fast Shipping: Secure packaging to maintain peptide stability.
Product: TB-500 (Thymosin Beta-4)
Grade: Research Grade (>99%)
Format: 5mg / 10mg Vials
Frequently Asked Questions
Is TB-500 the same as BPC-157?
No. While both are studied for regenerative properties, they work differently. BPC-157 is derived from gastric juice and works on the Nitric Oxide pathway. TB-500 interacts with Actin and the cytoskeleton. Many researchers study them in conjunction (a “stack”) to observe synergistic effects.
How do I reconstitute TB-500?
TB-500 is typically reconstituted with Bacteriostatic Water or Sterile Water. It should be handled gently (do not shake the vial) to prevent damaging the peptide bonds.
Is TB-500 legal?
TB-500 is legal to purchase and possess for laboratory research use only. It is not approved for human consumption, bodybuilding, or veterinary treatment of livestock.
Disclaimer: The content of this article is for educational purposes regarding the chemical properties of Thymosin Beta-4. All products sold by Zen Peptides are for laboratory research only and are not intended for human use.

