
MT2 (Melanotan II) is a synthetic cyclic analog of α-MSH that acts as a non-selective melanocortin-receptor agonist, engaging the MC1R, MC3R, MC4R, and MC5R receptors. It is studied primarily for its activation of MC1R on melanocytes, which drives melanogenesis—the eumelanin-production pathway that governs pigmentation. This compound offers researchers a focused tool for studying melanocortin-receptor pharmacology and the biology of pigmentation.

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