Research Use Only · 21+View TB-500 →
Thymosin β4 · Research Use Only · 21+
Research-grade TB-500, with the paperwork to prove it.
A synthetic thymosin beta-4 research peptide centered on the actin-binding LKKTETQ motif, third-party HPLC and mass-spec tested — with a lot-specific Certificate of Analysis on every batch. For laboratory research only.
99%+ PurityIndependent LabMade in USATracked US Shipping
The proof
Every batch, on paper.
We don’t hide behind a “3rd-party tested” badge. Every order ships with the lot-specific Certificate of Analysis for the exact vial you receive — independently run and verifiable by batch ID.
99%+
Purity
Confirmed by MS
Identity
Independent · ISO 17025
Lab
HPLC + mass spec
Method
What it is
A thymosin β4 fragment, studied in the lab.
TB-500 is a synthetic peptide corresponding to the active region of thymosin beta-4, a naturally abundant intracellular peptide that binds and sequesters monomeric G-actin. It is investigated in preclinical, in-vitro models of actin regulation, cell migration, and angiogenesis. Supplied as a lyophilized powder for laboratory research — not for human or veterinary use, and not a drug or dietary supplement.
- Parent
- Thymosin β4 (43 aa)
- Active motif
- LKKTETQ
- Molecular weight
- ≈ 4921 g/mol
- Form
- Lyophilized powder
- Storage
- −20°C, protect from light
Why researchers order from Ascension
Bought on the paperwork, not the hype.
A COA for every batch
Lot-specific HPLC + mass-spec report, shipped with the order and verifiable by batch ID.
Independent third-party testing
Purity by RP-HPLC and identity by mass spectrometry — through an ISO 17025 lab, not in-house.
Responsive US support
Real people, US-based, who answer batch and documentation questions before you order.
Tracked US shipping
Fast domestic dispatch with tracking on qualifying orders.
Consistent stock
Reliably in stock, so a research protocol isn't waiting on a restock.
Made in the USA
Synthesized and handled to a documented, repeatable standard.
Questions
What researchers ask.
Is TB-500 third-party tested?
Yes. Every batch ships with a lot-specific Certificate of Analysis — purity by RP-HPLC and identity by mass spectrometry from an independent ISO 17025 laboratory, verifiable by batch ID.
What is TB-500?
TB-500 is a synthetic thymosin beta-4 research peptide built around the actin-binding LKKTETQ motif, studied in vitro for actin regulation and cell migration. It is supplied strictly for laboratory research.
How is TB-500 stored?
As a lyophilized powder at −20°C for long-term storage; reconstituted solutions are kept at 2–8°C and used within a few weeks. Avoid repeated freeze-thaw cycles.
Is TB-500 for human or veterinary use?
No. It is for laboratory and research use only — not for human or veterinary use, and not a drug or dietary supplement. You must be 21 or older to purchase.
More research compounds
Building a protocol? Start here.
Often pairedBPC-157A gastric pentadecapeptide studied in vitro for angiogenesis and cytoprotection signaling.View BPC-157 →Skin researchGHK-CuA copper-binding tripeptide studied for collagen and gene-expression signaling.View GHK-Cu →BlendGLOWA single-vial research blend of BPC-157, TB-500, and GHK-Cu for combined-signaling protocols.View GLOW →
Compliance
For laboratory and research use only. You must be 21 or older to purchase. Not for human or veterinary consumption. These products are not drugs or dietary supplements and are not intended to diagnose, treat, cure, or prevent any disease. Statements on this page have not been evaluated by the U.S. Food and Drug Administration. Ascension Labs is a chemical supplier, not a compounding pharmacy.