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Research Compound

Thymosin Alpha-1: what it is & how it’s tested

Thymosin Alpha-1 (Tα1) is a 28-amino-acid peptide originally identified from thymic tissue. It is supplied lyophilised as a research compound for in vitro laboratory study only.

Research use only

For in vitro laboratory research only. Not for human or animal consumption; not intended to diagnose, treat, cure or prevent any condition. 18+.

Written by Sebastian Reuters, Science & Health WriterLast updated August 2026

Thymosin Alpha-1 (Tα1) is a 28-amino-acid peptide originally identified from thymic tissue. It is supplied lyophilised as a research compound for in vitro laboratory study only.

What Thymosin Alpha-1 is

Thymosin Alpha-1 is a defined 28-amino-acid peptide, derived from a larger precursor protein (prothymosin alpha). It is manufactured synthetically and studied as a distinct research compound.

Its identity is confirmed by mass spectrometry and its purity measured by HPLC, so each batch can be reported on an independent Certificate of Analysis.

Where Thymosin Alpha-1 appears in research

In the research literature, Thymosin Alpha-1 is studied in immunology research models. This describes the research domain in which the compound appears, not a claim of any effect. Thymosin Alpha-1 is not a medicine, supplement or cosmetic, and is not approved for human or veterinary use.

How Thymosin Alpha-1 should be tested

Quality is a matter of evidence, not the label. A credible supplier tests every batch at an independent laboratory: HPLC measures purity as a percentage (commonly to a ≥99% benchmark), and mass spectrometry confirms the compound’s identity.

The result should be a batch-specific Certificate of Analysis you can verify at source. Learn how to read a COA, or see BioHack London’s independent Thymosin Alpha-1 reports.

Storage, handling and reconstitution

Lyophilised (freeze-dried) Thymosin Alpha-1 is generally kept cool, dry and out of light. Reconstitution — dissolving it in a suitable solvent such as bacteriostatic water — is done immediately before laboratory use, and the reconstituted solution is typically refrigerated and used within a limited period.

Our reconstitution calculator helps work out solvent volumes, and bacteriostatic water is available in the range.

Thymosin Alpha-1: frequently asked questions

What is Thymosin Alpha-1?

Thymosin Alpha-1 (Tα1) is a 28-amino-acid peptide originally identified from thymic tissue and derived from the precursor protein prothymosin alpha. It is supplied as a lyophilised research compound for in vitro laboratory research use only.

Where does Thymosin Alpha-1 come from?

It is a fragment of the larger precursor protein prothymosin alpha, associated with the thymus. The research compound is manufactured synthetically to the defined 28-amino-acid sequence.

How is Thymosin Alpha-1 tested?

A credible supplier tests each batch at an independent laboratory — HPLC for purity (commonly to a ≥99% benchmark) and mass spectrometry to confirm identity — and publishes a batch-specific Certificate of Analysis you can verify at source.

Is Thymosin Alpha-1 for human use?

No. Thymosin Alpha-1 is supplied strictly for in vitro laboratory research. It is not for human or animal consumption and is not intended to diagnose, treat, cure or prevent any condition. Purchasers must be 18 or over.

Related research compounds

Thymosin Alpha-1, independently tested and verifiable.

Every batch is tested to a minimum 99% purity, with a Certificate of Analysis you can verify.