Made in USA
Mt-I
Purity 99.74%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 Mt-I for research?
Here it is. Astral stocks Mt-I, CAS 75921-69-6, in 10 mg vials as freeze-dried powder for laboratory research only. Order with the cart button above.
Is Mt-I legal to buy?
Astral sells Mt-I as a research chemical for laboratory use only. It is not offered as a medicine, a cosmetic or a supplement, and it is not for human or veterinary use.
What is Mt-I?
A lab-made, linear analog of alpha-MSH, a natural 13-amino-acid hormone, with two of its amino acids swapped. Astral sells it as freeze-dried powder for in-vitro research only.
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 | 75921-69-6 |
|---|---|
| Molecular formula | C78H111N21O19 |
| Molecular weight | 1646.9 g/mol |
| Form | Lyophilized powder |
| Purity (latest released COA) | 99.74% |
| 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-MT1-001
COA-2026-TD1FLY
Dosage10 mg
Purity (HPLC)99.74%
Analysis date2026-08-06
LabILS Laboratories