MT -2

Melanotan II acts as a non-selective agonist of the melanocortin receptors, MC1, MC3, MC4, MC5. To the extent that melanotan II produces melanogenesis, this is thought to be caused by activation of the MC1 receptor, whereas its clinically documented sexual effects are thought to be related to its ability to activate the MC4 receptor (though the MC3 is thought to possibly also be involved).