Premium research peptides — For research purposes only
Woosh Peptides
For Research Purposes Only
Melanotan I
Third-party tested

Third Party Tested

99% purity guaranteed

99% Purity Guaranteed

Discrete packaging

Discrete Packaging

Sun protection

4.8/5 based on 2,847 reviews | Trustpilot

Melanotan I

$104

A 13-amino-acid α-MSH analog. Studied for melanogenesis, photoprotection, and erythropoietic protoporphyria indications with a cleaner safety profile than MT-II.

Bundle & Save

At your Door in 3-5 Days

David P.

David P.

Independent Researcher

The CoA matched what I independently verified in my own assay. That's not something I've been able to say about most suppliers.

Johanna M.

Johanna M.

— Protocol researcher

Compound arrived lyophilized, correctly labeled, with a batch-specific CoA. Exactly what a research order should look like.

Edmund.

Edmund.

— Biochem researcher

I switched to Woosh after a competitor's purity claim didn't hold up to third-party testing.

Sarah C.

Sarah C.

— Independent researcher

The research library is genuinely useful. Study citations, mechanism breakdowns — not just marketing copy.

  • CAS Number: 75921-69-6
  • Molecular Formula: C78H111N21O19
  • Molecular Weight: 1646.85 g/mol
  • Purity: >99% HPLC
  • Form: Lyophilized powder
  • Storage: Store at 2–8°C

Designation: RUO — Research Use Only. Not for human or veterinary use.

A 13-amino-acid α-MSH analog. Studied for melanogenesis, photoprotection, and erythropoietic protoporphyria indications with a cleaner safety profile than MT-II.

The Research Profile section below details the mechanisms and the literature that frames each.

Every vial ships with a Certificate of Analysis tied to its batch. Third-party verified at ≥99% purity by independent HPLC and mass-spec. Discreet packaging, cold-chain handling where required, at your door in 3–5 business days.

If your shipment is delayed, damaged, or fails CoA verification, we replace it — no questions asked.

Added to cart

View cart

Frequently Paired Products

Researchers often pair Melanotan I with these compounds for multi-system protocols.

Bundle total: $229.96

Research Profile

This peptide has been the subject of extensive preclinical investigation across multiple biological systems.

Key areas of research interest include the following.

Higher MC1R:MC4R selectivity than Melanotan-2. Minimal penile erection, appetite, or blood-pressure effects in published trials.

Clinically approved for erythropoietic protoporphyria; extends pain-free sun exposure window in published EPP cohorts.

Stimulates eumelanin synthesis in epidermal melanocytes. Induces physiologic tanning over 1–2 weeks of dosing in sensitive phototypes.

Subcutaneous administration; the clinical formulation is a slow-release bioresorbable implant. Reconstituted lyophilized powder refrigerates to 30 days.

Verified Before it Reaches You.

Every Woosh batch undergoes independent third-party testing. The CoA for this product is batch-specific — issued by the testing laboratory, not generated by Woosh.

Woosh

RESEARCH GRADE . 99% PURITY

MELANOTAN I RESEARCH

Melanotan I

Melanotan I

CAS NUMBER

75921-69-6

MOLECULAR FORMULA

C78H111N21O19

MOLECULAR WEIGHT

1646.85 g/mol

PURITY

>99% HPLC

DESIGNATION

RUO . RESEARCH USE ONLY

Not for human or veterinary use

BATCH VERIFIED

Research Use Only

This product is strictly for in vitro research and laboratory use only. Not for human or veterinary consumption. By purchasing, you confirm use in a controlled research setting.

Frequently Asked
Questions

Every batch is independently tested via third-party HPLC and mass spec. The full Certificate of Analysis is published before purchase, verifying >99% purity.

A CoA documents the exact compound tested, its purity, and batch identifiers. It's the only independent proof that what's in the vial matches what's on the label.

These are research-grade compounds intended for laboratory study only. Not for human or veterinary use. All research protocols should follow your institution's guidelines.

Store lyophilized peptides at –20°C. Once reconstituted, keep at 2–8°C and use within 30 days for maximum stability.

Every Woosh shipment includes protection. Lost, damaged, or stolen orders are replaced or refunded with documentation.

Orders placed before 12pm ship same-day. Standard delivery is 3–5 business days within the US.

Start with our research library — mechanism breakdowns, study citations, and protocol references. Our team can also point you to peer-reviewed literature for any compound.

Yes — volume pricing is available for research labs, universities, and bulk orders. Contact us with your expected monthly volume for a custom quote.

4.9/5 . Trusted by Thousands
Shop Peptides