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For Research Use Only. Not for human or veterinary consumption, diagnostic, or therapeutic use. Sold exclusively to qualified research professionals.

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For Research Use Only. Not for human consumption.

Thymosin Alpha-1
  • ≥99% Purity (HPLC)
  • 3rd-Party Verified
  • Research Use Only
  • Trusted by Researchers
  • HPLC Verified

99.3%

Independent purity assay

  • Tested

US ISO-Accredited Lab

Janoshik Analytical · ISO 17025

3rd-Party Verified Purity

  • 99.2%
View Certificate of Analysis — TA1-261419-019
View COA
Description
Thymosin Alpha-1 is a 28-amino-acid peptide derived from prothymosin α, used in in vitro research on T-cell maturation, TLR signaling, and innate immune response pathways.
  • Purity: ≥99% by HPLC
  • Molecular formula: C129H215N33O55
  • Molecular weight: 3108.3 g/mol
  • CAS: 62304-98-7
  • Form: Lyophilized powder
  • Storage: -20°C, protect from light
  • Third-party verified COA included with every batch
For research use only. Not for human or veterinary use.
Shipping & Returns

Free standard shipping on orders over $200

Express shipping available at checkout

All sales are final — no returns or exchanges, as these are research-use peptides

Orders ship in discreet, tracked packaging

Storage & Handling

Store sealed lyophilized vials at -20°C, protected from light and moisture

Short-term storage (up to 30 days) acceptable at 2–8°C in original packaging

Avoid repeated freeze-thaw cycles

For research use only — handle according to your laboratory’s standard safety practices

Thymosin Alpha-1

4.9 (412 verified reviews)

30 researchers bought this in the last 24 hours

$65.99

This batch · 99.3% HPLC · Lot TA1-261419-019 · JanoshikView COA →
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2–4 days

Discreet packaging · Cold-chain where required · Fully tracked

Third-Party Tested

Independent HPLC purity verification

Discreet Packaging

Plain box, no branding outside

Free Reship if Damaged

Arrives broken? We send a new one

Reship policy: If your order arrives damaged or contaminated, we will reship a replacement free of charge. Refunds are not offered, only replacements, so every shipment is protected.

Bulk / Institutional Pricing

Ordering 10+ vials? Get a custom quote with volume-tier pricing and purchase order terms.

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Order by 2pm ET

COA per Batch

HPLC + Mass Spec

Discreet

Plain packaging

Verified Researcher Reviews

From qualified research professionals — institutional affiliation verified

4.9

(412 verified)

★ ★ ★ ★ ★

Everything arrived exactly as described with professional packaging and easy-to-review documentation. The COA matched the batch details, and the overall experience was excellent.

Preston Gallagher Verified Researcher
★ ★ ★ ★ ★

Great overall purchasing experience. Delivery was delayed by one day, but the premium packaging, clear labeling, and accurate batch information exceeded my expectations.

Landon Reeves Verified Researcher
★ ★ ★ ★ ★

Outstanding packaging and excellent communication throughout the ordering process. The vial arrived in perfect condition with complete quality documentation.

Bryce Donovan Verified Researcher
★ ★ ★ ★ ★

Very impressed with the overall quality and attention to detail. Shipping was fast, packaging was secure, and the documentation matched the product information perfectly.

Nolan Pierce Verified Researcher
★ ★ ★ ★ ★

Excellent experience from beginning to end. The product arrived securely packaged with clear batch labeling, and the Certificate of Analysis was easy to verify. Everything was presented professionally.

Harrison Cole Verified Researcher

Frequently Asked Questions

Everything researchers ask before ordering peptides.

All orders ship in plain, discreet packaging with no external branding. Tracking is provided by email within 24 hours. Lyophilized peptides are temperature-stable in transit and do not require refrigerated shipping.

Sealed and stored at −20°C, the lyophilized powder remains stable for 24+ months.

Yes. Every order ships with a batch-specific COA from an independent ISO/IEC 17025 accredited lab. You can preview the current batch COA above before ordering.

We accept all major credit cards and select alternative methods. Charges appear under a discreet, non-descriptive merchant name on your statement.

We ship within the United States only at this time. International researchers should review their local regulations regarding research-use peptides before placing inquiries.

Store sealed lyophilized vials at -20°C, protected from light and moisture, in the original packaging. Short-term storage (up to 30 days) at 2–8°C is acceptable. Avoid repeated freeze-thaw cycles.

Because these are research-use peptides, all sales are final. If your order arrives damaged or incorrect, contact us within 7 days and we will reship or refund.

No. All products are sold strictly For Research Use Only (RUO). They are not drugs, supplements, cosmetics, or food and are not intended for human or veterinary consumption.

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Made in USA

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3rd-Party Tested

Janoshik Analytical

8,000+ Labs

Trusted since 2021

92% Reorder Rate

Within 60 days

Purity Guarantee

Every vial meets ≥99% purity or we replace it. If it doesn't match its COA, we make it right.

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Orders placed by 2pm ET ship the same day from Fifth Avenue. Discreet, tracked, insured.

3rd-Party Verified

Every batch is independently tested by accredited labs. COA published before it ships.

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Certificate of Analysis

Thymosin Alpha-1

Independently tested by Janoshik Analytical, s.r.o.

BatchTA1-261419-019
Test MethodRP-HPLC
ManufacturedMarch 24, 2026
TestedApril 5, 2026
ExpiresApril 2028
LaboratoryISO/IEC 17025 accredited
Overall Purity 99.3%

PASSED ALL TESTS

Analytical Results

Test Result Specification Status
Identity (LC-MS) Confirmed Conforms PASS
Purity (HPLC-UV) 99.3% ≥ 98.0% PASS
Related substances < 1.0% ≤ 2.0% PASS
Water content (KF) 1.8% ≤ 5.0% PASS
Residual solvents Not detected ICH Q3C PASS
Heavy metals (ICP-MS) < 1 ppm ≤ 10 ppm PASS
Bacterial endotoxins < 0.125 EU/mg ≤ 0.5 EU/mg PASS
Sterility Pass USP PASS

This Certificate of Analysis is issued by an independent ISO/IEC 17025 accredited laboratory and verifies the identity, purity, and quality of the batch listed above. A copy is shipped with every order.