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Hormonal

Melanotan II

Melanocortin Receptor Agonist

Amino acid sequence

Cyclic · N-terminus →

01AcAc
02NleNle
03DAsp
04HHis
05dFdF
06RArg
07WTrp
08KLys
09NH2NH2
  • Polar
  • Hydrophobic
  • Acidic
  • Basic
  • Cyclic
  • 9 residues

Scientific Overview

Melanotan II is a synthetic cyclic peptide that binds melanocortin receptors in pharmacological research. This page covers receptor and laboratory signaling literature.

Mechanism focus

The cyclic lactam is studied for melanocortin-receptor affinity, including MC4R-related pathways. Published animal work examines central melanocortin signaling, feeding behavior, and thermogenic models.

Research Use Cases

  • Melanocortin receptor binding assays
  • MC4R signaling models
  • Central neuropeptide pharmacology
  • Chemical comparison with related cyclic peptides

Use-Case Study Notations

  • Case-study notation (preclinical): melanotan II has been used as a melanocortin agonist in feeding and thermogenesis models.
  • Case-study notation: chemistry papers describe staple and scaffold work that uses the melanotan II sequence as a substrate.
  • This page does not describe cosmetic outcomes. Receptor binding is not an appearance claim.

Selected Studies

  1. 01 Synthetic melanotropic peptide initiates erections in men with psychogenic erectile dysfunction: double-blind, placebo controlled crossover studyPubMed 9679884
  2. 02 Melanocortin receptor agonists, penile erection, and sexual motivation: human studies with Melanotan IIPubMed 11035391
  3. 03 Effect of an alpha-melanocyte stimulating hormone analog on penile erection and sexual desire in men with organic erectile dysfunctionPubMed 11018622
  4. 04 Melanotan-II: Investigation of the inducer and facilitator effects on penile erection in anaesthetized ratPubMed 16360286
  5. 05 Melanotan-II reverses memory impairment induced by a short-term HF dietPubMed 37478579

Research Use Only. This page is educational and intended for laboratory research context. Products are not for human consumption and are not intended to diagnose, treat, cure, or prevent any disease.

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