FOR RESEARCH USE ONLY. This compound is not FDA approved and is not for human or veterinary use. Cited literature is listed for educational reference only.
PURITY≥ 99%LyophilizedLaboratory analysis only
Structural Research
TB-500
20MGThymosin beta-4 active fragment.
12 peer-reviewed citations for this compound
Read the sourcesBundle & save
Volume tiers count vials of this compound at this strength. Mixing different compounds does not combine toward a tier.
Purchase option
1
Total$126.14
- ≥99% purity specification
- Secure checkout
- Ships in 1 business day
- Laboratory analysis only
Released against a ≥99% HPLC purity specification and supplied as a sealed laboratory reagent for in vitro research use only.
Compound information
- Type
- Thymosin beta-4 active fragment
- Molecular weight
- 889.0 g/mol
- Amino acids
- 7
- Sequence
- Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln
- Form
- Lyophilized powder
- Vial strength
- 20MG
- Purity specification
- ≥99% by HPLC
Identifiers are published properties of the molecule. Values we cannot confirm are omitted rather than estimated.
Shipping & storage
Dispatch
Ships within 1 business day of order confirmation, from the US. Vials ship lyophilized at ambient temperature; move them to the storage condition below on arrival.
Lyophilized
Store at -20°C, protected from light. Stable 24+ months sealed.
Reconstituted
Store at 2-8°C. Use within approximately 30 days.
Safety & handling profile
Bench handling, not a dosing guide.
Intended use
Supplied exclusively as a research reagent for in vitro and laboratory use by qualified researchers. Not a drug, dietary supplement, cosmetic or medical device, and not for human or veterinary use. No dosing, route or administration guidance is provided for any compound in this catalog.
Personal protection
Handle in a controlled laboratory environment with gloves and eye protection. Avoid generating or inhaling airborne particulate when opening a vial, and do not handle the material outside a designated work area.
Opening and reconstitution
Lyophilized peptides are hygroscopic. Let the sealed vial equilibrate to room temperature before opening so atmospheric moisture does not condense onto the powder. Reconstitute by directing diluent down the vial wall and swirling until dissolved — do not shake, which shears and foams the peptide.
Stability and aliquoting
Store at -20°C, protected from light. Stable 24+ months sealed. Store at 2-8°C. Use within approximately 30 days. Aliquot reconstituted material and minimize repeated freeze-thaw cycles.
Waste disposal
Dispose of unused material and reconstituted solutions through your institution's chemical and biological waste stream, in accordance with local regulations. Do not dispose of research material in domestic waste or to drain.
Sources
The published record, not our reading of it.
Peer-reviewed work indexed for TB-500. We publish no summary and draw no conclusions — open a paper to see what it studied and what it reports.
Published literature on this compound, listed for reference. Not a claim about this product.
Di H, et al. · Peptides, 2026
Mendias CL, et al. · Sports Med, 2026
Zhang Y, et al. · Cardiovasc Res, 2025
Kruoch Z, et al. · Cochrane Database Syst Rev, 2025
Jin Z, et al. · Cell Signal, 2025
Sosne G, et al. · Int J Mol Sci, 2022
Kleinman HK, et al. · Vitam Horm, 2016
Esposito S, et al. · Drug Test Anal, 2012
Ho EN, et al. · J Chromatogr A, 2012
Goldstein AL, et al. · Expert Opin Biol Ther, 2012
Philp D, et al. · Ann N Y Acad Sci, 2010
De La Cruz EM, et al. · Biophys J, 2000
Frequently researched together
Others in structural research
Important research notice
Not for human consumption. This product is sold exclusively for research and educational purposes. It is not intended to diagnose, treat, cure, or prevent any disease.
This material is supplied exclusively as a research reagent for in vitro and laboratory use by qualified researchers. It is not a drug, dietary supplement, cosmetic, or medical device, is not intended for human or veterinary use, and is not intended to diagnose, treat, cure, or prevent any disease. No dosing, administration, therapeutic, or benefit claims are made or implied. Cited literature is provided for scientific reference only and does not constitute a representation of efficacy or safety in any subject.
By purchasing this product, you confirm that you are a qualified researcher and will use it in accordance with all applicable laws and regulations.