Research compound · lyophilised

TB-500

US$43.00

Incl. VAT, plus shipping

Buy TB-500 as a lyophilised research peptide in sealed vials of 5 mg or 10 mg. TB-500 is a synthetic heptapeptide, Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln, that reproduces residues 17 to 23 of thymosin beta-4, the actin-binding segment of a 43 amino acid protein found in...

Volume pricing applied automatically at checkout, mixed compounds count

3+ vials −5% 5+ vials −10% 10+ vials −15%

For research use only
Lyophilised powder
Sealed glass vial
Ships from the EU · 1 to 3 working days
COA on request for documented batches

Intended use: Laboratory research only. Not for human or veterinary use.
Not a: Medicine, supplement, food or cosmetic
Advice: No dosing or medical advice is provided

Sealed vial: -20 °C for long-term storage, 2 to 8 °C for a few weeks, dry and dark
Reconstituted: Keep at 2 to 8 °C and use within a short period
Solvent: Bacteriostatic water, added slowly along the glass, never shaken

Documented batches: Products marked "COA on file" carry a certificate of analysis
Tests: Identity and purity per batch
Request: Send us the lot number on your vial and we send the report

3 or more vials: 5 % off every vial
5 or more vials: 10 % off every vial
10 or more vials: 15 % off every vial
Mixed orders: Different compounds count together, applied at checkout

Europe: 1 to 3 working days, tracked
Dispatch: Same or next working day from our EU warehouse
Packaging: Dry lyophilised powder, plain packaging
Rates: Shown at checkout for your country

Unopened vials: Statutory return period, seal intact
Opened or reconstituted: Cannot be returned for safety reasons

TB-500 US$43.00 Add

Documented, in stock, shipped from the EU.

1–3 days delivery across Europe

Buy TB-500 as a lyophilised research peptide in sealed vials of 5 mg or 10 mg. TB-500 is a synthetic heptapeptide, Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln, that reproduces residues 17 to 23 of thymosin beta-4, the actin-binding segment of a 43 amino acid protein found in almost all mammalian cells.

Buy TB-500: vial sizes and form

TB-500 is supplied in two vial sizes. The 5 mg vial covers single experiments, the 10 mg vial is intended for series or for cell culture work with several plates. Both contain lyophilised powder in a sealed glass vial, with the amount and the lot number on the label. For documented batches a certificate of analysis is available on request with that lot number, reporting identity by mass spectrometry and purity by HPLC; these products are listed under peptides with certificate of analysis. If your research design looks at TB-500 together with BPC-157, the BPC-157 and TB-500 blend contains 10 mg of each compound in one vial. All compounds of this group are listed under BPC-157 and TB-500 research peptides.

TB-500 specifications

Compound	TB-500, thymosin beta-4 fragment
CAS number	885340-08-9
Molecular formula	C38H68N10O14
Sequence	Ac-Leu-Lys-Lys-Thr-Glu-Thr-Gln (residues 17 to 23 of thymosin beta-4)
Molecular weight	approx. 889 Da
Amount	5 mg or 10 mg per vial
Form	Lyophilised powder, sealed vial
Purity	Reported per batch by HPLC, see certificate of analysis
Solvent	Bacteriostatic water

What TB-500 is: a thymosin beta-4 fragment

Thymosin beta-4 binds the protein actin and so takes part in how cells organise their cytoskeleton. TB-500 reproduces the short segment of the protein that is responsible for this binding. Because the fragment is much smaller than the full protein, it is easier to synthesise and to characterise by HPLC and mass spectrometry. In the literature the fragment is also called Tβ4(17-23) or LKKTETQ peptide; TB-500 is the name used by research suppliers.

Research areas for TB-500

Actin binding and cytoskeleton organisation in cell assays
Cell migration assays in cell culture
Peptide analytics and method development

These are research fields, not statements about effects in humans. If you are new to peptides, our guide What are peptides? explains how such fragments are built and tested.

Questions about TB-500

Is TB-500 the same as thymosin beta-4?

No. Thymosin beta-4 is the full protein with 43 amino acids. TB-500 is a synthetic fragment that reproduces the actin-binding segment. The fragment is the compound sold on this page.

Can TB-500 and BPC-157 be ordered in one vial?

Yes. The BPC-157 and TB-500 blend contains 10 mg of each peptide, lyophilised in one vial, for research designs that work with both compounds.

For laboratory research use only. Not for human or veterinary use, not a medicine, not a food or cosmetic.

Documented, not assumed

Every vial, documented.

How the compounds are tested, how to get the report, and how to handle the vial.

Per batch

Identity: Mass spectrometry
Purity: HPLC
Appearance: White lyophilised powder
Report: On request, by lot number

Questions about this product

The label states the amount of compound per vial in milligrams as filled. Purity for documented batches is reported in the certificate of analysis.

Bacteriostatic water for almost every compound in our range. It is available in 10 mL vials in the lab supplies category.

Much shorter than the powder. Keep it refrigerated at 2 to 8 °C and plan your research so that solutions are used within a short period.

Across Europe from our EU warehouse, delivery in 1 to 3 working days. Rates for your country are shown at checkout.

Unopened vials with intact seal can be returned within the statutory period. Opened or reconstituted products cannot be taken back.