PT-141

PT-141, also known as Bremelanotide, is a synthetic cyclic heptapeptide derived from the melanocortin system and designed to activate melanocortin receptors, particularly MC3R and MC4R in the central nervous system. Unlike compounds that act on the vascular system, PT-141 primarily influences neural pathways involved in sexual arousal and desire.

In scientific research, PT-141 is studied for its effects on sexual behavior and libido in both male and female models, with a mechanism that operates through central nervous system signaling rather than peripheral blood flow. It is also investigated for its interactions with dopamine and other neurotransmitter systems that regulate motivation, reward, and arousal.

PT-141 is primarily used in laboratory and clinical research to better understand melanocortin receptor pathways, sexual dysfunction mechanisms, and neuroendocrine regulation of behavior and mood.