Acetyl- (Cys4, D-Phe7, Cys10) -a-MSH (4-13)

Acetyl- (Cys4, D-Phe7, Cys10) -a-MSH (4-13) is a cyclic peptide that functions as a melanocyte-stimulating hormone. It significantly prolongs melanocyte activity in the skin of frogs and lizards and acts as a potent agonist. Additionally, Acetyl- (Cys4, D-Phe7, Cys10) -a-MSH (4-13) demonstrates complete resistance to trypsin degradation.

C(C=1C=2C(NC1)=CC=CC2)[C@H]3C(=O)N[C@H](C(N[C@H](C(=O)N4[C@H](C(N[C@@H]([C@@H](C)C)C(N)=O)=O)CCC4)CCCCN)=O)CSSC[C@H](NC(C)=O)C(=O)N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC5=CN=CN5)C(=O)N[C@H](CC6=CC=CC=C6)C(=O)N[C@@H](CCCNC(=N)N)C(=O)N3