Acetyl- (D-Arg10, Cys11, D-Phe14, Cys17) -β-MSH (10-17) amide

Ac-DArg-c[Cys-Glu-His-DPhe-Arg-Trp-Cys]-NH 2 is a cyclic octapeptide with MC4R agonism. Ac-DArg-c[Cys-Glu-His-DPhe-Arg-Trp-Cys]-NH 2 significantly increases heart rate and blood pressure.