TB-500 (Ac-LKKTETQ) – Thymosin Beta-4 Fragment (17–23) | Research Use Only

TB-500 is a synthetic peptide representing the active amino acid fragment (17–23) of the naturally occurring protein Thymosin Beta-4 (Tβ4). It is composed of seven amino acids and is studied in laboratory settings for peptide–protein interaction and signaling pathway research.

This short-chain fragment is structurally derived from the parent thymosin beta-4 sequence and is used in controlled experimental models.

Research Use Only: This material is supplied strictly for laboratory developmental research use. It is not intended for human or veterinary consumption.

Scientific Classification

• Common Name: TB-500
• Fragment Designation: Thymosin Beta-4 (aa 17–23)
• Sequence Length: 7 amino acids
• Classification: Synthetic heptapeptide (research peptide)
• Parent Protein: Thymosin Beta-4 (Tβ4)

Chemical & Structural Information

• Sequence: Ac-Lys-Lys-Thr-Glu-Thr-Gln (Ac-LKKTETQ)
• Amino Acids: Leu/Lys-Lys-Thr-Glu-Thr-Gln (see specific fragment reference)
• Molecular Formula: C₃₈H₆₈N₁₀O₁₄
• Molecular Weight: ~889.018 g/mol
• Appearance: White to off-white solid or lyophilized powder

Research Context

Within controlled laboratory environments, TB-500 has been examined in studies involving:

• Actin-binding protein interaction models
• Cell migration and cytoskeletal signaling pathway research
• Peptide–protein binding investigations
• Thymosin Beta-4 fragment structure–activity relationship (SAR) studies
• Extracellular matrix and tissue signaling research (in vitro)

All references above are limited strictly to laboratory and investigational research contexts.

No therapeutic or medical claims are made.

Product Classification

• Category: Synthetic Research Peptide
• Form: Solid / Lyophilized powder
• Intended Use: Laboratory and developmental research only

Regulatory Status

This product is not approved by the U.S. Food and Drug Administration (FDA) for the diagnosis, treatment, cure, or prevention of any disease.

This material is sold exclusively for laboratory research purposes.

FDA Disclaimer

The statements made within this website have not been evaluated by the US Food and Drug Administration. The statements and the products of this company are not intended to diagnose, treat, cure or prevent any disease.

The information provided is for educational purposes only and is not intended as medical or research advice.

Research Use Only

All products are for laboratory developmental research USE ONLY. Products are not for human consumption. Use of these products in any manner other than research violates the terms of service.

Legal Disclaimer

This product is sold as a pure compound for research purposes only and is not for use as a dietary supplement. Please refer to the terms and conditions prior to purchase.

Safety Information

Keep this product out of the reach of children. This material has limited research available and may result in adverse effects if improperly handled or consumed.

This product is not a dietary supplement but a pure substance sold as a raw material. It is intended for persons with the knowledge and equipment to safely handle laboratory materials. You agree to indemnify us for any adverse effects that may arise from improper handling and/or consumption.

The articles and information provided are exclusively for informational and educational purposes. These items are not pharmaceuticals or medications, and the FDA has not approved them for the treatment or prevention of any disease, medical condition, or ailment.