Acetyl-(Cys11,D-2-Nal14,Cys18)-β-MSH (11-22) amide

L-a-Asparagine, N-acetyl-L-cysteinyl-L-a-glutamyl-L-histidyl-3-(2-naphthalenyl)-D-alanyl-L-arginyl-L-tryptophylglycyl-L-cysteinyl-L-prolyl-L-prolyl-L-lysyl-,cyclic (1®8)-disulfide