2D Molecular Structure
- CID
- 62707662
- Standard InChIKey
- ADKDNDYYIZUVCZ-ZQNQAVPYSA-N
- FDA UNII
- QHK6Z47GTG
- Residue Count
- 7 AA
- Structural Modifications
- N-terminal acetyl
- Free C-terminal acid
- Thymosin β4 (17-23) fragment — not full-length protein
TB-500
Also known as: Thymosin β4 (17-23) acetylated fragment, Ac-LKKTETQ, N-Acetyl-Tβ4(17-23)
- CAS Number
- 885340-08-9
- Purity
- Batch-specific
- Form
- Lyophilized powder
- Enquiry Sizes
- Research vial • Bulk / custom fill (quote required)
- Peptide Sequence7 residues
- Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln
Compliance Notice: All products supplied by BioTech Pharma are intended strictly for laboratory research and development use only. They are not intended for human or veterinary use, diagnosis, treatment, or consumption of any kind. By submitting an enquiry, the requester confirms they are a qualified researcher or institution and accepts full responsibility for compliant handling and use.
Configure Your Request
Documentation requests are reviewed against the records available for the applicable lot. Availability, methods, and values must be confirmed for the specific enquiry and are not promised in advance.
Form supplied: Lyophilized powder. Your selections are carried into the quote request automatically.
Overview
The research code "TB-500" is registered in the FDA Global Substance Registration System (UNII QHK6Z47GTG) as the N-terminally acetylated heptapeptide N-Acetyl-Leu-Lys-Lys-Thr-Glu-Thr-Gln, corresponding to residues 17-23 of thymosin β4. This segment overlaps the LKKTETQ actin-binding motif of the parent 43-residue protein and is the defined molecular entity BioTech Pharma supplies under this catalog name.
The full-length thymosin β4 protein is a distinct, larger molecule, and the "TB-500" label has historically been applied loosely to both the intact protein and this fragment. To keep chemical identity unambiguous, this product is fixed to the acetylated 17-23 fragment as characterized in the analytical literature; lot-specific analytical documentation may be available and should be confirmed for the applicable material.
In preclinical and in-vitro work, the LKKTETQ region of thymosin β4 has been studied in the published literature for its role in G-actin sequestration and cytoskeletal dynamics. These model observations are exploratory, do not establish clinical efficacy, and should be distinguished from any established pharmacology; the peptide is offered strictly as a research reagent and is not a drug or a product for human or veterinary use.
Research Applications
- Actin sequestration and cytoskeletal dynamics assays
- Thymosin β4 fragment structure-activity studies
- Cell-migration and in-vitro cell-model research
- Peptide identity and analytical characterization work
Frequently Asked Questions
Scientific References
Analytical Data
Lot-specific documentation may be available for the applicable material and must be confirmed per enquiry. Where available, it may include:
- HPLC purity result
- LC-MS identity confirmation
- Appearance
- Net content
Request the records you need with your quote and we will confirm availability for your batch.
Procurement Details
Availability, lead time, salt / content basis, and cold-chain requirements depend on the specific lot and quantity, so we confirm them per enquiry rather than publishing fixed figures. Request confirmation for your requirements with your quote and our team will respond with details for the applicable batch.
Storage & Handling
Lyophilized powder: store desiccated at −20 °C, protected from light and moisture. Reconstitute immediately before use; prepared aqueous solutions should be kept cold (2–8 °C) and used within an empirically determined stability window for the applicable material.
Related Compounds
BPC-157
Pentadecapeptide derived from gastric Body Protection Compound, widely studied in tissue-repair and gastrointestinal research models.
GHK-Cu
Naturally occurring copper tripeptide complex, central to dermal-matrix, collagen-synthesis, and cosmetic-formulation research.
Bacteriostatic Water
Aqueous laboratory research reagent studied as a companion diluent for reconstituting lyophilized peptides in the laboratory.