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.

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$57
A non-selective α-MSH analog activating MC1/3/4/5R. Studied for melanogenesis, appetite suppression, and libido research via central melanocortin pathways.
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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.
— Protocol researcher
Compound arrived lyophilized, correctly labeled, with a batch-specific CoA. Exactly what a research order should look like.
Edmund.
— Biochem researcher
I switched to Woosh after a competitor's purity claim didn't hold up to third-party testing.
Sarah C.
— Independent researcher
The research library is genuinely useful. Study citations, mechanism breakdowns — not just marketing copy.
Designation: RUO — Research Use Only. Not for human or veterinary use.
A non-selective α-MSH analog activating MC1/3/4/5R. Studied for melanogenesis, appetite suppression, and libido research via central melanocortin pathways.
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.
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View cartResearchers often pair Melanotan 2 with these compounds for multi-system protocols.
This peptide has been the subject of extensive preclinical investigation across multiple biological systems.
Key areas of research interest include the following.
Activates MC1R (melanogenesis), MC3/4R (appetite + libido), and MC5R (sebaceous gland). Useful probe for the entire melanocortin receptor family.
Central MC4R activation induces erection in published male cohorts — the mechanism behind PT-141 (bremelanotide), which is a selective MT-2-derived fragment.
MC3/4R activation reduces food intake in rodent models, though the effect tolerates with repeated dosing.
Subcutaneous administration; dose-dependent nausea is the most commonly-reported transient effect in published trials.
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.

RESEARCH GRADE . 99% PURITY
MELANOTAN 2 RESEARCH
Melanotan 2
Melanotan II
CAS NUMBER
121062-08-6
MOLECULAR FORMULA
C50H69N15O9
MOLECULAR WEIGHT
1024.18 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.
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.