Thymosin Alpha-1

$65.00

Research Use Only | Not for Human Consumption

A synthetic 28-amino-acid N-terminally acetylated peptide (Tα1) derived from prothymosin alpha, supplied in lyophilized form for laboratory research.

Chemistry

CAS#FormulaMolar Mass
CAS Number: 62304-98-7Molecular Formula: C129H215N33O55Molar Mass: 3108.30 g/mol

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A 28-amino-acid thymic peptide studied for immune-signaling and T-cell research

SKU: PF-THYMOSIN-ALPHA-1

Thymosin Alpha-1 (Tα1) is a synthetic 28-amino-acid, N-terminally acetylated peptide (Ac-SDAAVDTSSEITTKDLKEKKEVVEEAEN) derived from the precursor protein prothymosin alpha and widely used as a reference immunomodulatory peptide in laboratory research. It is supplied as a lyophilized powder strictly for research use only and is not for human consumption.

What is Thymosin Alpha-1?

Thymosin Alpha-1 (Tα1) was first isolated in the 1970s from thymosin fraction 5, a thymic tissue extract characterized by Allan Goldstein and colleagues. It was later identified as a 28-amino-acid, N-terminally acetylated fragment of the precursor protein prothymosin alpha, and is commonly described as a reference immunomodulatory thymic peptide.

As a research compound, Thymosin Alpha-1 has been the subject of an extensive preclinical and in vitro literature examining immune-signaling mechanisms — including T-cell maturation, Toll-like-receptor and dendritic-cell signaling, natural-killer-cell activity, and cytokine networks.

Peptide Foundry supplies Thymosin Alpha-1 as a high-purity lyophilized powder for laboratory investigators studying these immune-signaling pathways. This product is intended for research use only and is not for human consumption.

How should Thymosin Alpha-1 be stored?

All of our products are manufactured using the Lyophilization (Freeze Drying) process, which ensures that our products remain 100% stable for shipping for up to 3-4 months.

Prepared samples must be stored in the fridge to maintain stability, and remain stable for up to 30 days when properly refrigerated.

Certificate of Analysis

Every batch of Thymosin Alpha-1 is tested by ILS Laboratories, an ISO/IEC 17025–accredited lab, for purity, identity, heavy metals, sterility, endotoxin, and a fentanyl screen. The full certificate is below.

Thymosin Alpha-1 · 10mg

Lot FO545LyophilizedReceived 07/17/2026Tested 07/19/2026
PASSFull QC Panel+
99.33%Purity

Peptide Purity · HPLC @ 214 nm

99.33% — exceptional research-grade purity

Area-normalized against all peptide-related peaks. Identity confirmed by chromatographic retention-time match to a reference standard.

Every test on this certificate

Identity (HPLC-RTM)Pass
Confirmed
Fentanyl ScreenPass
Not Detected
Heavy Metals · ICP-MSPass
All Pass
Sterility · PCRPass
No Growth
Endotoxin · USP <85>Reported
NMT 0.05 EU/mL
Net Peptide ContentReported
10.18 mg

Verify authenticity · Access code

YUZZF5D3

Verify at ILS Laboratories →
Download PDF

COA documents are updated with each new batch. Contact support for batch-specific documentation.

References

  1. Romani L, Bistoni F, Gaziano R, et al. Thymosin alpha 1 activates dendritic cells for antifungal Th1 resistance through toll-like receptor signaling. Blood. 2004;103(11):4232-9.