TB-500
Research Peptide
TB-500 is a synthetic, 7-amino-acid fragment of thymosin beta-4 (Ac-LKKTETQ), studied in laboratory models for its actin-binding properties and role in cell migration. This vial contains lyophilized peptide, third-party tested by HPLC and mass spectrometry, with a batch-matched Certificate of Analysis. For laboratory research use only.
Dosage
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Certificate of Analysis
TB-500 is the common name for a synthetic seven-amino-acid peptide fragment of thymosin beta-4 (Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln-OH, or Ac-LKKTETQ), corresponding to residues 17–23 of the 43-amino-acid parent protein. It is not the full-length thymosin beta-4 molecule, and research findings on one should not be assumed to apply to the other. This vial contains 10 mg of net peptide content, supplied as a sterile lyophilized powder in a light-protected vial labeled with its lot number for traceability. Each vial ships with reconstitution and storage guidance intended for laboratory handling of the research material.
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Frequently Asked Questions
Find answers to common questions about this product, storage, and testing standards.
TB-500 is the common name for a synthetic seven-amino-acid peptide fragment of thymosin beta-4, with the sequence Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln-OH (Ac-LKKTETQ). It's supplied here as a research-grade lyophilized powder for laboratory use.
No. TB-500 is a 7-amino-acid fragment corresponding to residues 17–23 of thymosin beta-4, which is a 43-amino-acid protein. TB-500 retains the actin-binding region of the parent protein but is a distinct, shorter molecule, and studies on one shouldn't be read as evidence about the other.
Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln-OH, abbreviated Ac-LKKTETQ — an acetylated N-terminus with a free acid C-terminus.
The 10 mg figure is the net TB-500 peptide content in the vial, supplied as a lyophilized (freeze-dried) powder.
Direct TB-500 research is limited to preclinical in vitro and animal studies of actin binding and cell migration. Much of what's commonly cited as "TB-500 research" was actually conducted on the full-length thymosin beta-4 protein, not the isolated fragment — a distinction worth keeping in mind when reading outside literature.
Yes. Every batch is third-party tested, and a COA matching the lot number on your vial is available for download from your account after purchase.
The COA reports HPLC purity and mass-spectrometry-confirmed identity for the specific batch you receive, along with the batch number and analysis date. It confirms the material's identity and purity — it doesn't establish safety or effectiveness for any application.
Each batch is verified by HPLC for purity and mass spectrometry for molecular identity before release.
No completed human efficacy trial has administered TB-500 directly. Any human clinical data referenced elsewhere for "thymosin beta-4" generally concerns the full-length protein, not the TB-500 fragment.
No. This product is for laboratory research use only. It is not approved for human or veterinary use, has not been reviewed by the FDA, and must not be used as a food, drug, or cosmetic.
Store the lyophilized vial in a freezer at -20°C, protected from light. Once reconstituted for laboratory use, keep refrigerated at 2–8°C and use within the timeframe noted on the Certificate of Analysis.
There is no minimum order quantity. Bulk pricing is available on select bundles for qualified research institutions — contact us for details.