Thymosin Alpha-1 is a 28-residue acetylated peptide originally isolated from thymic tissue and now produced synthetically. For research groups studying innate and adaptive immune signaling, it serves as a well-characterized immunomodulatory tool with a documented interaction profile at Toll-like receptors. Puritide Research supplies Thymosin Alpha-1 as a high-purity, research-use-only material, synthesized for in vitro and animal-model work and backed by third-party-verified certificates of analysis so your data rests on consistent, documented quality.
Available Sizes
- ›Thymosin Alpha-1 5 mg Vial
- ›Thymosin Alpha-1 10 mg Vial
Product Specifications
- Application
- Immune-signaling and Toll-like receptor research
- Appearance
- Solid, white lyophilized powder in a sealed glass vial
- Chemical Formula
- C129H215N33O55
- PubChem SID
- 16130571
- CAS Number
- 62304-98-7
- Molecular Weight
- ~3108.29 g/mol
- Synonyms
- Thymosin Alpha-1, Thymalfasin, Tα1, TA1, Zadaxin
- Storage
- Store at ≤25°C, sealed, away from heat, light, and moisture. For extended storage, keep lyophilized and refrigerated or frozen.
What Is Thymosin Alpha-1?
Thymosin Alpha-1 (thymalfasin) is a 28-amino-acid peptide with an acetylated N-terminus, first isolated in 1977 from the thymic preparation known as Thymosin Fraction 5 and now manufactured by chemical synthesis. Its linear sequence contains no cysteine residues and no disulfide bonds.
In laboratory settings, Thymosin Alpha-1 is studied as an immunomodulatory peptide that interacts with Toll-like receptors on dendritic cells and precursor T cells. It is investigated for its influence on T-cell differentiation, cytokine expression, and the balance of innate and adaptive immune responses in controlled models.
Present understanding derives from in vitro assays, animal models, and published clinical research. Findings should be interpreted within their experimental context and not treated as established outcomes for any use supplied by Puritide Research. Thymosin Alpha-1 is supplied strictly for laboratory use and is not approved for human or veterinary application.
Thymosin Alpha-1 Mechanism of Action (Research Only)
Thymosin Alpha-1 is studied as a pleiotropic immunomodulator that acts on multiple immune cell subsets. The mechanisms below reflect observations from biochemical assays, cell-culture studies, and animal models, and should be read strictly in a research context.
Structural Basis
Thymosin Alpha-1 is a short, acetylated linear peptide without disulfide bridges. Its compact, flexible structure is thought to support interactions with pattern-recognition receptors, and its lack of secondary-structure constraints makes it a straightforward, reproducible tool for immune-signaling studies.
Toll-Like Receptor Signaling & Immune Modulation
A primary focus of Thymosin Alpha-1 research is its reported engagement of Toll-like receptors, including TLR2, TLR3, TLR4, TLR7, and TLR9, on myeloid and plasmacytoid dendritic cells. Receptor engagement is studied for its coupling to downstream signaling nodes such as MyD88, NF-κB, p38 MAPK, and IRF3.
Downstream, Thymosin Alpha-1 is examined for its influence on dendritic-cell activation, T-cell maturation and Th1 polarization, and the expression of cytokines including IL-2 and interferons, as well as natural-killer-cell activity. Researchers use it to characterize how a single peptide can shape both innate and adaptive immune outputs under controlled conditions.
Thymosin Alpha-1 Research Applications
Thymosin Alpha-1 is investigated across preclinical and translational studies as an immunomodulatory peptide for exploring host-defense signaling. The observations below derive from biochemical studies, cell-based assays, and animal models, and should be interpreted within their respective settings.
Immune-Signaling & Dendritic-Cell Studies
A leading application is investigating Toll-like receptor engagement and dendritic-cell activation, how Thymosin Alpha-1 influences antigen-presenting-cell behavior, cytokine profiles, and T-cell differentiation in cell-based systems.
It is also used in comparative research alongside other thymic peptides, such as thymulin and thymopentin, to examine differences in immune-signaling mechanisms without establishing any therapeutic conclusion.
Infection, Inflammation & Translational Models
Researchers use Thymosin Alpha-1 in animal and cell models to study immune responses relevant to viral infection, immune suppression, and inflammatory states. These studies aim to improve mechanistic understanding of immune regulation rather than to establish physiological or therapeutic effects.
Laboratory Safety & Handling (Research Use Only)
Thymosin Alpha-1 is a synthetic, lyophilized research peptide for laboratory investigation only. It should be handled by qualified personnel in controlled environments, in accordance with institutional policies, laboratory safety procedures, and applicable regulations. As a research material, laboratories should implement practices that prioritize material integrity, traceability, and reproducibility.
Handling & Storage Guidelines
Follow institutional SOPs, chemical hygiene plans, and approved protocols; wear appropriate PPE (lab coat, gloves, eye protection); and use engineering controls where required. Record lot numbers, storage conditions, and handling activities, and retain Certificates of Analysis and batch documentation to support traceability and audit readiness.
Store material under the conditions specified in product documentation, protected from excessive heat, moisture, and direct light. Reconstituted peptide is less stable than the lyophilized form; maintain consistent conditions throughout the study period and monitor storage records as part of quality assurance.
Certificate of Analysis & Quality Assurance
Each Thymosin Alpha-1 batch ships with a third-party-verified Certificate of Analysis, providing transparent, research-grade quality control. The CoA includes a purity assessment (HPLC / reverse-phase chromatography), mass-spectrometry identity confirmation, and lot number, testing date, and method documentation.
Researchers may request sample CoAs (PDF) ahead of purchase to confirm testing parameters, analytical methods, and batch consistency, and are encouraged to perform independent verification.
Research Use Only
