99.566%
Average purity
- Labeled content
- 10mg
- Net content
- 11.81mg (+18%)
- Vials tested
- 3
- Endotoxins
- Pass
- Heavy metals
- Pass
- Microbial sterility
- Pass
- Method
- RP-HPLC / LC-MS
- Tested
- Jul 16, 2026
10mg · 99%+ Purity
THYMOSIN ALPHA-1
Thymosin Alpha-1 (TA1), also known as thymalfasin, is an acetylated 28-amino-acid thymic peptide.
$72.00
COA Tested
99%+ Purity
Research Grade
Tue, Oct 6 – Wed, Oct 7
Free Delivery Guarantee
2-day shipping
We accept
99.566% purity
View COA
Certificate of Analysis
Thymosin Alpha-1 10mg · 3 vials tested by an independent lab · RP-HPLC / LC-MS
99.34%
Average purity
- Labeled content
- 10mg
- Net content
- 11.64mg (+16%)
- Vials tested
- 1
- Endotoxins
- Pass
- Method
- HPLC-UV
- Tested
- Feb 24, 2026
Compound Information
Chemical and structural properties
What it is
What is Thymosin Alpha-1?
Thymosin Alpha-1 (TA1), also known as thymalfasin, is an acetylated 28-amino-acid thymic peptide.
- Class
- Thymic immunomodulatory peptide
- Also known as
- TA1, thymalfasin
- Form
- White lyophilized powder
- Use
- Research use only
Molecular profile
Compound Structure
- CAS number
- 62304-98-7
- Molecular formula
- C129H215N33O55
- Molecular weight
- 3108.3 g/mol
- Amino acids
- 28
- Sequence
- Ac-Ser-Asp-Ala-Ala-Val-Asp-Thr-Ser-Ser-Glu-Ile-Thr-Thr-Lys-Asp-Leu-Lys-Glu-Lys-Lys-Glu-Val-Val-Glu-Glu-Ala-Glu-Asn
Storage
Storage & Stability
- Store cold
- Protect from light
- Keep dry
Lyophilized (powder)
2–8°C (36–46°F)
Refrigerate · −20°C for long-term storage
Reconstituted
2–8°C (36–46°F)
Refrigerate · use within 28 days
- Solubility
- Soluble in bacteriostatic water
Thymosin Alpha-1 Overview
A 28-amino-acid thymus peptide studied for its role in immune function.
Technical overview
Thymosin alpha-1 was first isolated from thymus tissue by Allan Goldstein's group in 1977. It is 28 amino acids long with an acetylated N-terminus, and it is made synthetically for research.
Research applications
TA1 is studied in immune research, including T-cell maturation, dendritic-cell signalling, and immune response in models of infection, vaccination and aging.
FAQs
-
What is thymosin alpha-1?
Thymosin alpha-1 (TA1, thymalfasin) is a 28-amino-acid peptide, acetylated at its N-terminus, originally isolated from thymus tissue.
-
What is thymosin alpha-1 studied for?
TA1 is studied in immune research, including T-cell maturation and function and immune response in models of infection and vaccination.
-
How is thymosin alpha-1 tested?
Every batch goes to an independent lab. The current batch was tested across three vials for purity (RP-HPLC), identity (LC-MS), net peptide content, endotoxins, heavy metals and sterility. Each batch's certificate of analysis is published on the lab results page.
-
How should thymosin alpha-1 be stored?
Keep the sealed vial in the refrigerator at 36–46°F (2–8°C), dry and away from light. As a freeze-dried powder it tolerates room temperature for weeks, which is why it ships without ice. Once reconstituted, keep it refrigerated between uses. More in our guide, Do peptides need to be refrigerated?
-
How much thymosin alpha-1 is in a vial?
Thymosin alpha-1 comes as a white lyophilized powder in a 10mg vial.
-
Is thymosin alpha-1 for human use?
No. Thymosin alpha-1 is sold for laboratory research use only.
Free shipping
on orders over $200
Delivery Guarantee
free with every order
Secure checkout
256-bit SSL
Frequently researched together
-
GLUTATHIONE
$69.00
Add to cart -
GHK-CU
$38.00
Select options -
SS-31
$58.00
Add to cart -
NAD+
$76.00
Select options
