Cellular Peptide
TB-500
Size: 10MG
For research use only. Not for human or veterinary use.
TB-500 FDA generally uses TB-500 for the synthetic N-acetylated 17–23 fragment of thymosin beta-4, Ac-LKKTETQ, rather than full-length 43-residue thymosin beta-4. Analytical studies identified that heptapeptide in products sold as TB-500 and studied its disposition in horses, but FDA's 2026 review found no human administration studies and insufficient nonclinical evidence to support wound-healing efficacy. Neither free-base nor acetate TB-500 is a component of an FDA-approved drug. The 10 mg artwork does not identify free base versus acetate or verify molecular identity, purity, sterility, endotoxin control, or stability.
Certificate of Analysis
Lot-specific analytical results and downloadable documentation
- Purity (HPLC)
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- Identity
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- Net content
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- Sterility
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- Endotoxin
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Compound Information
Technical specifications
What is TB-500?
- Type
- Unverified common-name N-acetylated peptide-fragment research substance
- CAS number
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- Molecular weight
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- Amino acids
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- Molecular formula
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Stability Information
FDA cites different reported storage conditions for TB-500 free base and acetate, but the vial's form is undisclosed and neither condition is validated for this catalog material.
Sources & References
Peer-reviewed and authoritative records
U.S. Food and Drug Administration
Regulatory scientific reviewEvaluation of TB-500-Related Bulk Drug Substances for Inclusion on the 503A Bulk Drug Substances List
View SourceDrug Testing and Analysis
Primary analytical researchSynthesis and characterization of the N-terminal acetylated 17-23 fragment of thymosin beta 4 identified in TB-500, a product suspected to possess doping potential
View SourceJournal of Chromatography A
Primary analytical and animal researchDoping control analysis of TB-500, a synthetic version of an active region of thymosin beta-4, in equine urine and plasma by liquid chromatography-mass spectrometry
View SourceFASEB Journal
Mechanistic reviewBiological activities of thymosin beta-4 defined by active sites in short peptide sequences
View SourceImportant Research Notice
Not for human consumption. This product is sold exclusively for laboratory, analytical, and educational research purposes. It is not intended to diagnose, treat, cure, or prevent any disease.
Research information presented on this page is provided for educational reference and should not be interpreted as medical advice or as a product claim.
By purchasing this product, the customer confirms that it will be handled and used only by qualified individuals in accordance with all applicable laws and laboratory procedures.
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