Melanotan II

Melanotan II (MT-2) is a synthetic cyclic peptide derived from the melanocortin signaling framework and structurally related to α-melanocyte-stimulating hormone (α-MSH). Its cyclic configuration and defined amino acid substitutions distinguish it from linear melanocortin analogs. In laboratory research settings, Melanotan II is utilized as a reference material for studying melanocortin receptor interaction models, peptide–receptor binding behavior, and comparative structure–activity relationships within melanocortin signaling pathways.