TB-500 Peptide — Thymosin Beta-4 Fragment | Research Grade
TB-500 is a synthetic 17-amino-acid fragment of Thymosin Beta-4 — the actin-binding protein found in most mammalian cells — studied in cell-migration and cytoskeletal research. Supplied as a 10 mg lyophilized vial, for in-vitro laboratory research use only.
- Sequence length: 17 amino acids (active fragment of TB4)
- Mechanism studied: G-actin binding and sequestration
- Purity: ≥99% HPLC, third-party tested, COA included
- Shipping: USA same-day (before 2pm CT M-F) · free over $200
Related: BPC-157 · BPC-157 / TB-500 Blend
For laboratory research use only. Not for human or animal consumption. Full details ↓
$ 100.00
In stock
| Quantity | Price | Discount |
|---|---|---|
| 3-5 | $ 90.00 | 10% |
| 6-9 | $ 85.00 | 15% |
| 10+ | $ 80.00 | 20% |
In stock
Description
TB-500 is a synthetic 17-amino-acid fragment of Thymosin Beta-4 (TB4), the actin-binding protein found in most mammalian cells. LiveWell supplies it as a 10 mg lyophilized vial intended strictly for laboratory research. This product is classified as a research chemical for in-vitro study only and is not intended for human or veterinary use.
Structure
TB-500 corresponds to the actin-binding region of the full Thymosin Beta-4 protein. Because it represents only this active fragment rather than the complete 43-amino-acid protein, it is examined in the literature as a structurally distinct research compound from native TB4.
Chemical information
- Source: Synthetic fragment of Thymosin Beta-4
- Sequence length: 17 amino acids
- Vial size: 10 mg
- Format: Lyophilized powder
Studied in
- G-actin binding and sequestration research
- Cytoskeletal dynamics and cell-migration assays
- Comparative analysis against full-length Thymosin Beta-4
- Combination research alongside single-compound preparations
Storage & handling
- Store the lyophilized vial refrigerated at 2–8°C, protected from light and heat
- Reconstitute with bacteriostatic water; reconstituted material has a shorter storage window
- Follow your laboratory’s standard peptide handling protocol
Please note: No dosing instructions, medical claims, or therapeutic guidance are provided with this product. TB-500 from LiveWell Peptides is available exclusively for professional research and laboratory use.
TB-500 research reference: View study on PubMed
Buy TB-500 Research Peptide — cGMP Manufactured in Dallas, TX
LiveWell Peptides manufactures research-grade TB-500 (Thymosin Beta-4 fragment) in our cGMP facility in Dallas, Texas. Every vial is third-party tested to verify ≥99% HPLC purity, amino acid identity by mass spectrometry, and endotoxin limits by LAL testing, with a full COA published on our COA page. US orders before 2pm CT (Mon–Fri) ship same-day, with free domestic shipping over $200.
Why Researchers Source TB-500 from LiveWell
Documentation, not claims. Every batch ships with a verified COA confirming identity and purity, published on our COA page.
Four-point analytical testing. HPLC for purity, mass spectrometry for amino acid identity, and LAL testing for endotoxins.
US manufacturing and cold-chain logistics. Orders ship same-day from our Dallas, Texas facility, with international shipping to Colombia, Mexico, Brazil, Argentina, Chile and Peru.
Related research compounds
BPC-157 · BPC-157 / TB-500 Blend · BPC-157 vs TB-500 comparison · KLOW Blend · GLOW Blend · Certificates of Analysis
Research literature
Thymosin Beta-4 has been the subject of 1,039 peer-reviewed publications indexed in PubMed. Selected recent literature for research reference:
- Mendias CL et al. (2026). Safety and Efficacy of Approved and Unapproved Peptide Therapies for Musculoskeletal Injuries and Athletic Performance. Sports Med. PMID: 41966639
- Simiczyjew A et al. (2026). Comparative Proteomic Analysis of the Secretome of Control and BRAF/MEK Inhibitor-Resistant Melanoma Cells. J Proteome Res. PMID: 41742019
- Keplinger AJ et al. (2026). A revised model of nuclear actin import: Importin 9 competes with cofilin, profilin, and RanGTP for actin binding. J Biol Chem. PMID: 41478570
- Di H et al. (2026). Thymosin beta 4: An emerging research candidate in kidney-related cell models. Peptides. PMID: 41570941
References are provided for research reference only. Inclusion of literature does not constitute a recommendation, endorsement, or claim for any specific use of LiveWell Peptides products. Products are sold for laboratory and research use only and are not intended for human consumption, injection, topical application, or any other administration to the human body.
Frequently Asked Questions
What is TB-500?
TB-500 is a synthetic 17-amino-acid fragment of Thymosin Beta-4, the actin-binding region of the full protein. Supplied as a lyophilized vial strictly for in-vitro laboratory research.
How does TB-500 differ from full-length Thymosin Beta-4?
TB-500 is the 17-amino-acid active fragment, while native Thymosin Beta-4 is a complete 43-amino-acid protein. This structural difference is the property most often examined in comparative research.
Why are TB-500 and BPC-157 studied together?
The two compounds are examined for distinct mechanisms — TB-500 in actin-binding research, BPC-157 in cell-migration and signalling research — which is why they are frequently studied together in comparative in-vitro work. See the BPC-157 vs TB-500 comparison for more detail.
What purity is LiveWell TB-500, and is a COA included?
Every batch is third-party tested at ≥99% purity by HPLC, with mass spectrometry identity confirmation and LAL endotoxin testing. A full Certificate of Analysis is included and published on our COA page.
How should TB-500 be stored and reconstituted?
Store refrigerated at 2–8°C, protected from light and heat. Reconstitute with bacteriostatic water; reconstituted material has a considerably shorter storage window.
Is TB-500 a drug or supplement?
No. TB-500 is a research compound sold strictly for laboratory and research use only. It is not a drug, dietary supplement, or product intended for human or animal consumption.
Comprar TB-500 péptidos de investigación — fragmento de timosina beta-4 fabricado bajo estándares cGMP en Dallas, Texas. Certificado de análisis incluido. Envío internacional. Solo para uso en investigación.
Research Use Only Disclaimer: This product is sold strictly for in vitro laboratory research. NOT for human or animal consumption. LiveWell Peptides makes no medical claims.
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