How is N-Acetyl PT-141 different from standard PT-141?

It is the same melanocortin agonist scaffold with an N-terminal acetyl group intended to improve stability; the parent PT-141/bremelanotide is the FDA-approved reference compound.

Does it work like Viagra?

No. It acts centrally on melanocortin (MC4R) pathways that influence desire and arousal, rather than on the vascular PDE5 pathway targeted by drugs like sildenafil.

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Sexual Health

Research Chemical

N-Acetyl PT-141

Also known as: N-Acetyl PT-141

N-Acetyl PT-141 is an N-terminally acetylated analog of the melanocortin peptide PT-141 (bremelanotide) studied for effects on sexual arousal and libido. The acetylation is intended to improve stability while retaining melanocortin receptor activity.

Mechanism of Action

N-Acetyl PT-141 is a melanocortin receptor agonist derived from alpha-MSH and the PT-141/bremelanotide scaffold, acting primarily at central MC4R (with activity at MC3R). MC4R activation in hypothalamic circuits modulates dopaminergic signaling that drives sexual desire and arousal, producing effects centrally rather than through the vascular pathway used by PDE5 inhibitors. N-terminal acetylation caps the peptide to slow aminopeptidase degradation, potentially extending stability and exposure. The parent compound bremelanotide is FDA-approved for hypoactive sexual desire disorder, but this acetylated analog itself is a research chemical.

Half-life: Estimated several hours; not formally established for this analog
Administration Routes: subcutaneous
Research Status: Research Chemical