Thymosin Alpha-1: The Immune-Modulating Peptide in Research
Thymosin alpha-1 (also called thymalfasin) is a 28-amino-acid peptide originally isolated from thymic tissue. It is one of the most-studied peptides in immune-modulation research, investigated for how it supports T-cell maturation and innate/adaptive immune signaling.
Everything below is provided for research context only. This is a laboratory research compound — not a medicine, and nothing here is medical or dosing advice.
What Is Thymosin Alpha-1?
The thymus produces peptides that help mature and regulate immune cells. Thymosin alpha-1 is a synthetic version of one of these, providing a defined research tool for studying immune-cell function.
Specifications
- Class: synthetic 28-amino-acid thymic peptide (thymalfasin)
- CAS 62304-98-7
- Format: lyophilized powder, reconstituted with bacteriostatic water for research
- Research focus: T-cell maturation, immune modulation, host defense
How Thymosin Alpha-1 Works in Research
- T-cell maturation: studied for promoting the differentiation and function of T lymphocytes.
- Immune signaling: investigated for modulating dendritic-cell and cytokine responses via Toll-like-receptor pathways.
- Host defense: studied across infectious-disease and immune-competence models.
Where Thymosin Alpha-1 Sits in Research
It anchors immune-focused research and appears in immune-signaling research bundles such as the Core and Advanced Immunity stacks.
Handling in the Lab
- Ships as a lyophilized (freeze-dried) powder; reconstitute with bacteriostatic water using aseptic technique.
- Store the sealed powder cold and dark (long-term at -4°F); once reconstituted keep refrigerated at 36–46°F and use within a short window.
- Minimize freeze-thaw cycles and vial punctures.
- Judge quality by the lot-matched Certificate of Analysis (HPLC purity, mass-spec identity), not the label.
Frequently Asked Questions
What is Thymosin Alpha-1?
Thymosin alpha-1 (thymalfasin) is a synthetic 28-amino-acid thymic peptide studied for T-cell maturation and immune modulation. It is supplied for laboratory research use only.
How does Thymosin Alpha-1 work in research?
It is studied for promoting T-cell maturation and modulating immune signaling, including dendritic-cell and cytokine responses via Toll-like-receptor pathways. These are research findings, not medical claims.
What is thymalfasin?
Thymalfasin is another name for thymosin alpha-1 — the same 28-amino-acid peptide.
What is Thymosin Alpha-1's CAS number?
62304-98-7.
Is Thymosin Alpha-1 approved for human use?
This product is supplied for laboratory research use only — not for human or veterinary use, and nothing here is medical advice.
References
Peer-reviewed research and recognized sources supporting the statements above, provided for research context only — not medical advice.
- King R, Tuthill C. Immune modulation with thymosin alpha 1 treatment. Vitam Horm. View source →
- Garaci E, et al. Thymosin α1: from bench to bedside. Ann N Y Acad Sci. View source →
Research-grade Thymosin Alpha-1 — third-party tested, certificate of analysis per lot, same-day US shipping.
Shop research-grade Thymosin Alpha-1 →FOR LABORATORY AND RESEARCH USE ONLY. Golden State Bio supplies research-use-only chemicals for qualified researchers. Not for human or veterinary use; not evaluated by the FDA. Nothing here is medical advice.