Description
Thymosin Beta-4 Fragment 17-23 isolates the seven-amino-acid sequence that gives the full TB-500 protein its actin-binding activity. Limitless Life Nootropics offers it in 5mg and 10mg vials, made in the USA and independently tested.
What Is Thymosin Beta-4 Fragment 17-23?
Structural studies of Thymosin Beta-4 identified a short central region—Leu-Lys-Lys-Thr-Glu-Thr-Gln, or LKKTETQ—as the motif responsible for binding actin monomers. Research groups later showed that this fragment on its own can reproduce several of the cell migration effects seen with the complete 43-amino-acid molecule.
Working with the isolated fragment lets investigators pinpoint which outcomes depend on actin binding and which depend on other regions of the protein. It is also more economical to synthesize, which is reflected in its accessible price point.
The peptide is offered in Premium lyophilized grade and Non-Lyophilized grade, each in 5mg and 10mg sizes to match small pilot studies or longer protocols.
Research Applications
Published preclinical work has examined this peptide across several areas of investigation:
- Actin monomer binding and cell motility assays
- Keratinocyte and endothelial migration models
- Dermal wound-closure studies
- Structure–activity comparisons with full Thymosin Beta-4
- Blend studies alongside BPC-157
Researchers can review peer-reviewed studies on the LKKTETQ fragment through the National Library of Medicine (PubMed) database.
Thymosin Beta-4 Fragment 17-23 Specifications
| Product | TB-500 Thymosin Beta-4 Fragment 17-23 |
|---|---|
| Compound type | Heptapeptide (Leu-Lys-Lys-Thr-Glu-Thr-Gln) |
| Available sizes | 10mg, 5mg |
| Format | Lyophilized (freeze-dried) powder in a sealed glass vial |
| Purity | ≥99% (HPLC verified) |
| Origin | Manufactured in the USA |
| Testing | Independent third-party lab |
| Intended use | Laboratory research only |
Built for Reproducible Research
Independent researchers, university groups and private laboratories rely on Limitless Life Nootropics for consistent quality and responsive service. Every listing includes accurate format and size information, our compounds are stored under controlled conditions until they ship, and we stand behind every order. If something is not right, our U.S.-based support team will make it right.
Quality and Third-Party Testing
Every batch of this peptide sold by Limitless Life Nootropics is produced in the United States and verified by an independent third-party laboratory. Testing includes HPLC purity analysis and mass spectrometry identity confirmation, and a certificate of analysis is available for each lot so researchers can document exactly what they are working with.
Storage and Handling of Thymosin Beta-4 Fragment 17-23
For maximum shelf life, keep this peptide in its original sealed vial in a freezer (-20°C). Reconstituted material should be refrigerated, handled with sterile technique, and never left at room temperature for extended periods.
Need supplies? Pair your order with our reconstitution solution and sterile 10 mL vials for convenient preparation.
How Ordering Works
We know research timelines are tight. Most orders ship within one to two business days from our U.S. facility, packed discreetly and tracked from dispatch to delivery. Checkout is encrypted, and our support team can help with documentation, order status or bulk quantities for ongoing projects.
Related Research Products
Teams working with this peptide often explore TB-500 (Thymosin Beta-4), TB-500 Thymosin Beta-4 Fragment 1-4 and BPC-157. Browse the full Cardiovascular Research and Musculoskeletal Research collections, or view every compound in our research peptide catalog at Limitless Life Nootropics.
Frequently Asked Questions
What does LKKTETQ mean?
It is the single-letter amino-acid code for Leu-Lys-Lys-Thr-Glu-Thr-Gln, the actin-binding core of Thymosin Beta-4.
Which grades are available?
Premium lyophilized and Non-Lyophilized grades are both offered in 5mg and 10mg sizes.
Is Thymosin Beta-4 Fragment 17-23 for human use?
No. It is sold strictly for laboratory research. It is not intended for human or animal consumption, diagnosis or treatment.
Where can I buy Thymosin Beta-4 Fragment 17-23 online?
You can order it directly from Limitless Life Nootropics, a U.S. supplier of third-party tested research peptides with fast, discreet shipping.
Research Use Only
All products sold by Limitless Life Nootropics are intended strictly for in-vitro laboratory research and scientific study. This product is not a drug, food, supplement or cosmetic, has not been evaluated by the FDA, and is not for human or veterinary use. Purchase is limited to qualified researchers aged 21 and over.
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