Melanotan I
Melanotan I (afamelanotide) is a synthetic analogue of alpha-melanocyte-stimulating hormone developed at the University of Arizona. It is supplied here as a 10 mg pen presentation.
- Linear alpha-MSH analogue
- Selective for melanocortin-1 receptor activity
- Studied in photoprotection and pigmentation research
- Presentation
- 10 mg Pen
- Purity
- 99.59%
Sold strictly for in-vitro laboratory research. Not for human or veterinary consumption.
Research background
Melanotan I was designed as a more stable analogue of natural alpha-MSH, which degrades quickly in circulation. It stimulates melanocortin receptors on melanocytes, promoting eumelanin production.
Its research profile is narrower than Melanotan II: it is comparatively selective for pigmentation pathways, which is why it appears mainly in photoprotection and light-sensitivity literature rather than in studies of appetite or sexual function.
Handling and storage
Lyophilised material is stable for extended periods when kept sealed, dry, and away from light. Long-term storage in research settings is commonly at -20°C, with short transit at ambient temperature considered acceptable for lyophilised powders.
Once reconstituted, solutions are refrigerated at 2-8°C and used within a limited window, as peptides in aqueous solution degrade far faster than in powder form. Repeated freeze-thaw cycles are avoided.
Purity and batch testing
Every batch we list is accompanied by third-party analytical testing. The Certificate of Analysis linked on this page shows the lot number, HPLC purity trace, and mass spectrometry identity confirmation for the exact batch held in stock.
Purity figures quoted on this page are taken directly from that report rather than from a manufacturer datasheet, so what you read here matches the vial that ships.
Frequently asked questions
- How does Melanotan I differ from Melanotan II?
- Melanotan I is a linear analogue with comparatively selective melanocortin activity, while Melanotan II is a cyclic lactam analogue that engages a broader set of melanocortin receptors, including MC4R.
- Is this product for human consumption?
- No. Everything in the Fox Peptides catalogue is supplied strictly for in-vitro laboratory research use. It is not a medicine and is not for human or veterinary consumption.
- Do you provide a Certificate of Analysis?
- Yes. Each batch is third-party tested and the Certificate of Analysis for the lot currently in stock is linked directly on this page, showing HPLC purity and mass spectrometry identity confirmation.
- Where do you ship and how long does delivery take?
- We ship across the UK with tracked delivery. Orders are dispatched from the UK once payment clears, so there are no customs delays for UK customers.
- How do I pay?
- Checkout uses secure open-banking bank transfer. You approve the payment inside your own banking app, and your order is confirmed automatically once the transfer clears.