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PT-141 (Bremelanotide)

Technical Monograph

PT-141 (Bremelanotide) is a synthetic cyclic heptapeptide analog of alpha-melanocyte-stimulating hormone (alpha-MSH). It is primarily researched for its role in central nervous system-mediated sexual arousal.

Mechanism of Action

Unlike phosphodiesterase type 5 (PDE5) inhibitors that act solely on vascular pathways, PT-141 agonizes melanocortin receptors (MC3R and MC4R) primarily in the hypothalamus to stimulate neurogenic arousal.

Pharmacological Detail

By directly passing through the blood-brain barrier and binding to MC4 receptors in the medial preoptic area, it initiates a neurochemical cascade responsible for desire and arousal.

Pharmacodynamics

Elicits marked autonomic and somatic responses independently of external psychogenic stimulation.

Pharmacokinetics

Onset of action is highly variable (2 to 6 hours). Biological activity may persist up to 24-72 hours in some study models.

Preclinical Observations & In Vitro Data

FDA-approved (as Vyleesi) for female sexual arousal pathways. Data cited from broad published clinical literature; not a product claim.

Arousal Pathway Study (Phase 3): Statistically significant increases in sexual desire scores reported.

Abstract Highlights

  • Central nervous system pathway activation documented
  • Efficacy reported irrespective of vascular compromise
  • Significant activity in both male and female study models
  • Induction of spontaneous neurogenic arousal observed

Chemical Specifications

1025.2 g/mol
C50H68N14O10

Material Handling & Stability

Laboratory StorageStore lyophilized powder at -20°C.
Aqueous StabilityReconstituted solutions are stable for up to 28 days when refrigerated (2-8°C).

Strict Notice

THIS COMPOUND IS PRODUCED FOR LABORATORY RESEARCH PURPOSES ONLY. NOT FOR HUMAN CONSUMPTION. MATERIAL DATA SHEETS AND LABORATORY GUIDELINES SHOULD BE CONSULTED PRIOR TO HANDLING.