Melanotan II is a high-purity synthetic cyclic heptapeptide, a potent analogue of alpha-melanocyte-stimulating hormone (α-MSH), designed exclusively for laboratory research. This peptide acts as a non-selective agonist of melanocortin receptors (MC1R, MC3R, MC4R, MC5R), making it a valuable tool for investigating melanogenesis, appetite regulation, and energy homeostasis. Supplied as a lyophilized powder for reconstitution, Melanotan II provides researchers with a precise compound to study pigmentation, metabolic, and inflammatory pathways in experimental models.