TB-500

TB-500 is a synthetic peptide identified as the N-acetylated heptapeptide N-acetyl-LKKTETQ. It is represented in chemical and scientific reference databases as a distinct peptide research compound.

This product is supplied as a research material for qualified laboratory and scientific applications. Its defined sequence and molecular characteristics make it suitable for analytical, structural, and peptide-related research.

Product Classification

Primary Category: Research Peptides
Scientific Category: Synthetic Heptapeptide
Secondary Category: Peptide Research Compounds
Product Type: Research Peptide

Catalog Tags

TB-500 · Synthetic Peptide · Heptapeptide · Research Peptide · Laboratory Research · Research Material

Chemical Information

Compound: TB-500
Alternative Name: TB500
Chemical Description: N-acetyl-LKKTETQ
Peptide Sequence: LKKTETQ
CAS Number: 885340-08-9
Molecular Formula: C₃₈H₆₈N₁₀O₁₄
Molecular Weight: Approximately 889.0 g/mol

Research Information

TB-500 is a synthetic heptapeptide corresponding to the N-acetylated sequence LKKTETQ. FDA’s 2026 scientific review describes TB-500 as an N-acetylated heptapeptide and separately distinguishes it from full-length thymosin beta-4.

TB-500 has been investigated in scientific research, and the compound is represented in FDA and PubChem reference resources. FDA’s current evaluation also identifies limitations in the available evidence and concerns regarding characterization, peptide-related impurities, and potential immunogenicity associated with certain proposed drug-product applications.

This product description is intentionally limited to compound identity, composition, and research classification. It does not represent TB-500 as a therapeutic product or make claims regarding wound healing, tissue repair, recovery, athletic performance, pain, inflammation, or other effects on the human body.

Research Applications

TB-500 may be used as a research material in controlled laboratory environments for purposes such as:

Peptide characterization
Analytical testing
Structural investigation
Molecular research
Comparative peptide studies
Laboratory assay development
Peptide-related experimental research

These statements describe potential research contexts only and do not constitute recommendations for administration to humans or animals.

Product Specifications

Product Name: TB-500
Product Type: Synthetic research peptide
Primary Category: Research Peptides
Scientific Classification: Synthetic Heptapeptide
Chemical Description: N-acetyl-LKKTETQ
Sequence: LKKTETQ
CAS: 885340-08-9
Molecular Formula: C₃₈H₆₈N₁₀O₁₄
Molecular Weight: ~889.0 g/mol
Intended Application: Laboratory and scientific research

Important Product Information

This product is supplied as a research material. Researchers and purchasers are responsible for ensuring that their intended use complies with applicable laws, regulations, institutional requirements, and laboratory procedures.

The identity, purity, analytical results, and other product specifications should be verified against the applicable batch-specific Certificate of Analysis (COA) where available.

The term TB-500 should not be used interchangeably with full-length thymosin beta-4. FDA’s current materials distinguish TB-500 from the full-length peptide.

Research Use Notice

This product is supplied solely as a research material for qualified laboratory and scientific use.

It is not intended for human consumption, human therapeutic use, veterinary use, diagnosis, treatment, mitigation, or prevention of disease.

Nothing on this product page should be interpreted as a recommendation or representation that TB-500 is intended to affect the structure or function of the human body.

Not for use as a drug, dietary supplement, food, cosmetic, or medical treatment.

For laboratory research purposes only.