Melanotan 1 vs melanotan 2 — what is different?
Melanotan I is linear and largely MC1R-selective; melanotan II is cyclic and binds several melanocortin receptors, which is why its research profile is broader.
Is PT-141 related to melanotan II?
Yes — PT-141 is a metabolite of melanotan II with central melanocortin activity and no pigmentation effect.
Is a certificate of analysis provided with melanotan ii?
Yes. Every melanotan ii lot has a published, lot-matched COA showing HPLC purity and LC-MS identity confirmation.
How should melanotan ii be stored?
Store the lyophilized vial at -20°C protected from light. Once reconstituted with bacteriostatic water, keep it refrigerated at 2–8°C.