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Compound · Peptide

Thymosin Alpha-1

Thymosin Alpha-1 is a peptide. Peptide studied in immune-modulation and T-cell research.

Thymosin Alpha-1 · updated 24 Oct 2026

Thymosin Alpha-1 is a peptide originally identified in thymus tissue, and the Celyfe compound library classes it as an immune-modulating peptide studied for its role in T-cell function. It is a regulated compound and it is not carried in any Celyfe pen.

What is Thymosin Alpha-1?

Thymosin Alpha-1 is a naturally occurring peptide first isolated from thymus tissue. Like TB-500's parent protein thymosin beta-4, it belongs to the thymosin family, but the two are different peptides with different research literatures. The Celyfe library classes it as a peptide with the mechanism note: peptide studied in immune-modulation and T-cell research. As a peptide it is a regulated compound, which is why this page uses informational framing only.

Research peptides are made by solid-phase peptide synthesis and characterised by mass spectrometry for identity and HPLC for purity. The guide What are research peptides? explains the chemistry that applies to Thymosin Alpha-1 as much as to the peptides Celyfe does carry.

Is Thymosin Alpha-1 in a Celyfe pen?

No. The peptides Celyfe carries are BPC-157, TB-500, GHK-Cu and KPV in the WOLVERINE, GLOW and KLOW pens, all on sale now. Thymosin Alpha-1 is not in any of them, Celyfe does not currently sell it as a product, and Celyfe lists no Thymosin Alpha-1 reference, so this page makes no statement about research findings for the peptide.

Key takeaways

  • •Thymosin Alpha-1 is a peptide.
  • •Library note: Peptide studied in immune-modulation and T-cell research.
  • •Library entry: not currently carried in a Celyfe pen.
  • •Thymosin Alpha-1 is a regulated compound - this page is educational, not medical advice.
Educational

This page is informational and not medical advice. Thymosin Alpha-1 is a regulated compound. Celyfe pens are supplied strictly for in-vitro laboratory research and nothing here is guidance on use in humans or animals.

At a glance

Class
Peptide
Full name
Thymosin Alpha-1

Role in the library

Peptide studied in immune-modulation and T-cell research.

Compared with

Frequently asked questions

Sources

  1. NAD+ Precision Pen (product page)
  2. Compare: BPC-157 vs Thymosin Alpha-1
  3. Compare: EGCG vs Quercetin
  4. Guide: What are research peptides?
  5. Guide: Are peptides legal in the UK?
  6. Guide: What is TB-500?

Related peptide compounds

Thymosin Alpha-1: Thymus Peptide, Not TB-500 | Celyfe