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Melanotan II
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Safety data sheet

Standardized safety protocols and material specifications for professional use.

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Certificate of Analysis

Purity verified via High-Performance Liquid Chromatography (HPLC) for #myo-melanotan-ii-10mg

Official Product Data Sheet

Melanotan II (10mg)

Ultra High >99.9% Purity

Vial Contents
10 mg Melanotan II (lyophilized powder)
Includes
3 ml bacteriostatic water for reconstitution
Form
Lyophilized white powder for optimal stability
Purity
≥99%, third-party tested (COA available)
Sequence
Ac-Nle-c[Asp-His-D-Phe-Arg-Trp-Lys]-NH₂ (cyclic lactam)
Molecular Formula
C50H69N15O9
Molecular Mass
1024.18 g/mol
CAS No.
121062-08-6
Solubility
Reconstitute with sterile/bacteriostatic water (3 ml for ~3.33 mg/mL)
Storage
Lyophilized frozen at −20°C; reconstituted refrigerated at 2–8°C for up to 4 weeks

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Scientific Background

Melanotan II (MT-II) is a synthetic cyclic analog of alpha-melanocyte-stimulating hormone (α-MSH), designed as a non-selective melanocortin receptor agonist with potent activity at MC1R, MC3R, MC4R, and MC5R. Originally developed in the 1980s at the University of Arizona, it was the precursor compound from which the more targeted PT-141 (bremelanotide) was derived.

MC1R activation drives melanogenesis — the production of eumelanin (brown/black skin pigment) in melanocytes. MC4R activation in the hypothalamus modulates appetite, sexual arousal, and autonomic functions. MC3R plays roles in energy homeostasis and inflammatory regulation. MC5R is involved in exocrine gland function. This broad receptor profile produces MT-II's distinctive combination of effects: skin tanning, sexual arousal, appetite suppression, and spontaneous erections in male subjects.

As an investigational compound, Melanotan II provides a valuable model for melanocortin receptor pharmacology research, studying the interplay between pigmentation, appetite, sexual function, and metabolic regulation. It is not approved for therapeutic use and is provided strictly for research purposes.

Intended Research Use

  • Broad-spectrum melanocortin receptor (MC1R/MC3R/MC4R/MC5R) pharmacology research
  • Melanogenesis and skin pigmentation studies via MC1R activation
  • MC4R-mediated sexual arousal and libido pathway research
  • Appetite suppression and energy homeostasis research via MC4R/MC3R signaling
  • Spontaneous penile erection models in male rodent studies
  • Comparative receptor selectivity studies versus Melanotan I and PT-141
  • Melanocortin system and metabolic/reproductive axis interaction research

Research Note: Melanotan II's broad melanocortin receptor activation profile produces multiple simultaneous effects: MC1R drives melanogenesis (tanning), MC4R mediates sexual arousal and appetite suppression, and MC3R modulates energy balance. This multi-receptor activity makes MT-II valuable for studying melanocortin system interactions but also produces more side effects than receptor-selective compounds like Melanotan I (MC1R-selective) or PT-141 (MC4R-biased). Understanding this receptor profile is essential for proper research design.

warning

FOR RESEARCH USE ONLY. This product is intended for laboratory research purposes only and is not for human consumption, medical, or diagnostic use.

Myotrope

Possible stacks with other peptides

Synergistic combinations for enhanced research outcomes

Melanotan II's multi-receptor activity makes it a versatile research compound for studying melanocortin system interactions. Research combinations typically focus on complementary skin, sexual health, or metabolic pathways.

schedule

Cycling Note: MT-II pigmentation effects develop over 2–4 weeks with daily dosing, then maintenance can be reduced to every 2–3 days. Research cycles of 4–8 weeks loading followed by reduced maintenance dosing are typical.