What purity are Bastion Peptides products?

All peptides from Bastion Peptides are independently verified at ≥99% purity by Janoshik Analytical using reverse-phase HPLC and LC-MS confirmation. Batch-specific Certificates of Analysis are available through the COA Lookup on our Resources page.

What form do Bastion Peptides products come in?

All peptides are supplied as lyophilized (freeze-dried) powder in sealed, individually labeled vials. Lyophilization extends shelf life and protects peptide integrity during shipping and storage.

Is a Certificate of Analysis available?

Yes. A batch-specific Certificate of Analysis from Janoshik Analytical is available for every Bastion Peptides product through the COA Lookup tool on the Resources page.

How should research peptides be stored?

Store lyophilized peptides at −20°C. After reconstitution with bacteriostatic water, store at 2–8°C and use within 28 days. Avoid exposure to heat, light, and repeated freeze-thaw cycles.

Longevity & Anti-Aging

Thymosin Alpha-1 | 5mg

Name: Thymosin Alpha-1 | 5mg | HPLC Verified ≥99% Purity | Bastion Peptides
SKU: TA5
Availability: InStock
Rating: 0 (1 reviews)

(1 customer review)

Price range: $50.00 through $395.00

Thymosin Alpha-1 5mg Immune research peptide. Third-party tested. Research use only.

Pack Size

Clear

HPLC Verified ≥99% Purity

COA Included with Every Order

Ships from US — Discreet Packaging

I confirm this product is for in-vitro research purposes only and not for human consumption or therapeutic use.

SKU: TA5 Category: Longevity & Anti-Aging

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Volume Pricing

1 Vial $50.00

5 Vials $220.00($44.00/vial) Save 12%

10 Vials Best Value $395.00($39.50/vial) Save 21%

Wholesale accounts save 20–50% on all orders.

For Research Use Only — Not for human or veterinary consumption. Intended solely for in vitro laboratory research.

Third-Party Tested · Janoshik Independent Laboratories · >99% Purity

Read Research Overview

Cold-Chain Shipping Included — Insulated packaging + ice packs on every order. Store at −20°C upon arrival.

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Overview

Thymosin Alpha-1 (Tα1) is a 28 amino acid peptide naturally secreted by the thymus gland and a key regulator of immune system homeostasis. Originally isolated from thymosin fraction 5 by Allan Goldstein in 1977, Tα1 has been extensively studied for its immunomodulatory properties including T-cell maturation, dendritic cell activation, and NK cell enhancement. It is one of the most clinically advanced thymic peptides, with regulatory approval in several countries for immune restoration.

Molecular Formula	C₁₂₉H₂₁₅N₃₃O₅₅
Molecular Weight	3108.25 g/mol
CAS Number	62304-98-7
Purity	≥99% (HPLC verified)
Format	Lyophilized powder
Quantity	5mg per vial
Storage	-20°C, protect from light

Key Research Applications

T-cell differentiation and maturation studies
Dendritic cell activation and antigen presentation research
NK cell and cytokine production models
Toll-like receptor (TLR) pathway investigation
Immunodeficiency and viral immunity models
Tumor immunology and immunosuppression reversal research

Reconstitution: Add 1 mL of sterile bacteriostatic water. Gently swirl — do not shake. Store reconstituted peptide at 4°C and use within 14 days.

Research Use Only. This product is intended strictly for in vitro laboratory research. Not for human or veterinary use. Not evaluated by the FDA.

Researcher Resources

For laboratory research purposes only. Not for human consumption. These statements have not been evaluated by the U.S. Food and Drug Administration.

Pack Size	1 Vial, 5 Vials, 10 Vials

1 review for Thymosin Alpha-1 | 5mg

Rated 5 out of 5
T. Voss, Immunology Lab – April 30, 2026
Thymosin Alpha-1 met all purity specs. Great service, arrived with ice packs still cold. Exactly what we needed for immunomodulation studies.

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Reconstitution Calculator

Calculate exactly how much bacteriostatic water to add for your target concentration.

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Shelf Life (reconstituted) 28 days @ 4°C

For research purposes only. Always verify concentrations independently.

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Bacteriostatic Water 10ml $8.00 Required for peptide reconstitution

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Frequently Asked Questions

What purity level is this peptide?+

All Bastion Peptides products are >99% purity (HPLC verified). IGF-1 LR3 is >98%. Certificate of Analysis available on the Resources page for every batch.

How do I reconstitute this peptide?+

Add bacteriostatic water slowly along the vial wall — do not shake. Gently swirl until dissolved. Standard dilution: 1ml bac water per 5mg peptide. Store reconstituted peptide at 4°C and use within 28 days.

What are the storage requirements?+

Store lyophilized (freeze-dried) peptides at −20°C. Once reconstituted, store at 4°C and use within 28 days. Avoid repeated freeze-thaw cycles and light exposure.

Is this product for human use?+

No. All products are strictly for in vitro laboratory research only. Not intended for human or veterinary use, consumption, or any therapeutic application.

How is cold-chain shipping handled?+

All orders ship with insulated packaging and ice packs included. US standard shipping is 3–5 business days. Expedited options available at checkout.

Do you provide a Certificate of Analysis?+

Yes. COA documents for every batch are available on the Resources page. Contact support to request a specific batch COA.

Certificate of Analysis

COA Available on Request

Janoshik Independent Lab

Lot-Specific Testing

All Bastion Peptides products are submitted to Janoshik Independent Laboratories for third-party purity, identity, and potency verification. Certificates of Analysis are available for every product lot.

Request COA by Email Janoshik Lab Website

Thymosin Alpha-1 | 5mg