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Thymosin Alpha-1 5MG
SKU NP-TA1-5MG
$59.99
CAD
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Overview
Properties
Research
Lab Results
FAQ
Thymosin Alpha-1 5mg overview
Thymosin Alpha-1 (Tα1, CAS# 62304-98-7) is a synthetic 28-residue, N-terminally acetylated polypeptide originally isolated from bovine thymus tissue as the principal active component of thymosin fraction 5. NexPept supplies it as a lyophilized research reference standard for immune-cell signalling assays, cytokine-modulation studies, and toll-like receptor pathway research. Not for use in any living organism.
Every lot is independently tested by a third-party analytical laboratory before it is listed. The Certificate of Analysis reports HPLC purity, mass spectrometry identity confirmation, and net-content verification, and stays published in our COA library after the batch sells out.
For background on the compound itself — why it is not the same peptide as TB-500, why the N-terminal acetyl group matters more than the purity figure, and what its regulatory position actually is — see our Thymosin Alpha-1 research peptide overview.
✓
99.93% HPLC purity on the current lot✓
Mass spectrometry identity confirmed✓
Batch number printed on every vial✓
Certificate published, not available on requestStudied in vitro for
Batch verification
Current lot
Third-party lab verified
HPLC + mass spectrometry
BatchNP-TA1-02
TestedAug 17, 2026
Purity99.93%
Properties
| CAS Number | 62304-98-7 |
|---|---|
| Full Name | Thymosin Alpha-1 |
| Synonyms | Thymalfasin; Tα1 |
| Compound Class | Synthetic N-terminally acetylated polypeptide — thymosin fraction 5 component |
| Sequence Length | 28 amino acids |
| Molecular Formula | C₁₂₉H₂₁₅N₃₃O₅₅ |
| Molecular Weight | 3108.28 g/mol |
| Physical Form | Lyophilized powder |
| Appearance | White to off-white lyophilized solid |
| Net Quantity | 5 mg / vial |
| Analytical Method | HPLC + Mass Spectrometry |
Research context
Thymosin Alpha-1 is used as a peptide tool compound in preclinical in vitro settings, and is among the most studied immunomodulatory peptides in this research area. Published work has examined its behaviour in T-lymphocyte maturation studies, viral immunology models, tumor immunology research, and toll-like receptor (TLR2/TLR9)-mediated NF-κB and cytokine signalling assays.
As a defined 28-residue sequence with consistent structural characteristics between lots, it is used in controlled laboratory environments to study immune-cell signalling and receptor engagement. Lot-to-lot consistency matters for this kind of work, which is why every NexPept batch is published with its own purity figure rather than a blanket claim.
This compound has not been authorized by Health Canada for any therapeutic, clinical, or human use.
Further reading
Thymosin Alpha-1 research peptide overview — how it differs from TB-500, verified chemistry, batch data and sourcing
PubMed — Thymosin Alpha-1 — peer-reviewed scientific literature
NexPept COA Library — published certificates for every batch we have sold
Lab results
Certificates for the lots we have shipped. The batch number on your vial matches one of these.
Research Use Only. All products are intended solely for laboratory research use and are not for human or veterinary use. By purchasing, the buyer agrees to use these products in compliance with all applicable laws.
Frequently asked questions
What testing does each batch go through?
Identity and purity are confirmed by high-performance liquid chromatography and mass spectrometry before a lot is listed. The current lot, NP-TA1-02, tested at 99.93% on August 17, 2026. If a lot has not been tested, it does not go on sale.
What class of compound is Thymosin Alpha-1?
A synthetic 28-amino-acid, N-terminally acetylated polypeptide originally isolated from bovine thymus tissue as the principal active component of thymosin fraction 5. It is supplied as a lyophilized powder and handled as a peptide reference standard. It is a different peptide from thymosin beta-4 / TB-500 despite the shared name — our Thymosin Alpha-1 research peptide overview sets out the difference.
What signalling pathways is it studied through?
Preclinical work has examined its engagement with toll-like receptors TLR2 and TLR9, and downstream NF-κB and cytokine-signalling activity, in immune-cell models.
What physical form does it arrive in?
A white to off-white lyophilized (freeze-dried) solid, sealed in a single vial. Net quantity is 5mg. No preparation, reconstitution or handling instructions are supplied; those are determined by qualified personnel under your own institutional protocols.
All products are intended for laboratory research use only. Not for human or veterinary use.
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Frequently Asked Questions
Everything you need to know before ordering
Product Quality Summary is available on every product page. Independent third-party Certificates of Analysis are available upon request for select batches and may be verified directly with the testing laboratory.
Please note that all sales are final. Due to the nature of our products and inventory, we are unable to accept returns. Product quality is independently assessed via 3rd party laboratory testing to ensure quality, and all purchases made via this website are done with the implied consent that you acknowledge and accept the empirical testing provided on each product page. In the event of dissatisfaction or quality concern, please consult with us via email so that we can try to assist.
We ship to addresses within Canada only. All orders are shipped domestically via Xpress Post with Canada Post to ensure safe, discreet delivery.
Most orders ship the same business day. Orders within the Greater Toronto Area (GTA) typically arrive within 1–2 business days, while more rural or remote areas can expect 3–5 business days. FlexDelivery and PO Boxes are supported. Please note these are average delivery times — delays may occasionally occur due to courier issues or remote locations.
Every peptide product sold on our site is lab-tested before it's listed. If a product hasn't been tested, we don't sell it.
Unless otherwise noted on the product page, all NexPept research compounds are supplied as lyophilized (freeze-dried) powder for laboratory research use. Physical form and net quantity are listed individually on each product page.