Made in USA
GLP-3 RT
Purity 99.09%Third-party tested— View COA
Mass 10 mg
2
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Why Astral
Made in USA
All Astral compounds are proudly manufactured in the United States.
Fast Shipping
All orders are shipped within 24 hours with express 2-Day and Overnight delivery options.
Lifetime Support
All customers receive lifetime support for their compounds via email or phone.
Third Party Tested
Every compound goes through rigorous testing at third party labs before it’s deemed ready to ship to customers.
FAQ
Where can I buy retatrutide for research?
Right here. Astral lists retatrutide as GLP-3 RT in 10, 20 and 30 mg vials, sold for laboratory research only. Choose a size above and it ships from our New York inventory.
Is GLP-3 RT the same as retatrutide?
Yes. GLP-3 RT is our catalog name for retatrutide, CAS 2381089-83-2. The 3 counts the receptors it acts on and RT shortens the name.
Is retatrutide legal to buy?
We sell it as a research chemical for laboratory use, not as a medicine. As of November 2026 retatrutide has no FDA approval, so it is not for human or veterinary use.
How fast does it ship?
Orders ship from our own inventory in New York. Standard, 2-Day and Overnight options, with arrival dates for your address, are shown at checkout.
Storage
All our compounds are stored and shipped in lyophilized form for stability. Lyophilized peptides are stable at room temperature for many months. Once your order arrives, use our Astral H₂O or an equivalent solvent to reconstitute. Peptides are not as stable in reconstituted form. They should be refrigerated and used within 4-6 weeks.
Peptide storage guide · How to reconstitute peptides · Peptide calculator
Shipping
All orders ship within 24 hours. We offer standard, 2-Day, and overnight delivery options. Free standard shipping is offered for orders over $100 and free 2-Day shipping for orders over $200.
Product specs
| CAS number | 2381089-83-2 |
|---|---|
| Molecular weight | 4731.4 g/mol |
| Form | Lyophilized powder |
| Purity (latest released COA) | 99.09% |
| Net quantity | 10 mg / vial |
Intended Use:
This peptide is intended for in vitro research only by qualified professionals. It is not for human or veterinary use, and must not be used in food, drugs, diagnostics, or cosmetics.
Disclaimer:
This compound has not been evaluated by the FDA. All use must follow institutional and regulatory guidelines. All buyers must be authorized research personnel or institutions.
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Documentation
Certificates of Analysis
Batch-specific, third-party lab certificates. Each COA is published here once its lot has been tested — preview the results, then open the full PDF.
AST-RT30-001
210573
Dosage30 mg
Purity (HPLC)99.751%
Analysis date2026-08-05
LabJanoshik Analytical
AST-RT20-001
154055
Dosage20 mg
Purity (HPLC)99.61%
Analysis date2026-05-11
LabJanoshik
AST-RT10-001
COA-2026-TUCWZ6
Dosage10 mg
Purity (HPLC)99.09%
Analysis date2026-08-06
LabILS Laboratories