Melanotan II
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Lyophilized Melanotan II Powder
Key Features
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Potent Melanocortin Agonist: Melanotan II binds MC1R–MC5R subtypes to stimulate eumelanin synthesis and provide controlled skin‑pigmentation effects in cellular and animal models Wikipedia.
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Rapid Tanning Response: Human trials report visible tanning of forehead, arms, and neck after low‑dose subcutaneous injections, without UV exposure PubMed.
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Sexual Arousal & Appetite Modulation: Demonstrates central MC4R‑mediated increases in sexual arousal and transient appetite suppression in healthy volunteers PubMed.
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Fast Pharmacokinetics: Subcutaneous dosing of Melanotan II yields absorption‑phase half‑lives of 0.07–0.79 h and elimination β‑phase half‑lives of 0.8–1.7 h, supporting pulse‑dosing protocols PubMed.
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Clean Safety Profile: Side effects are generally mild—facial flushing, nausea, yawning—and serious adverse events are rare when used under controlled research conditions PubMedPubMed.
Applications
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Pigmentation & Photoprotection Studies: Model melanin synthesis pathways, UV‑damage mitigation, and cosmetic formulation testing in skin explants and organotypic cultures PubMed.
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Neuroendocrine Research: Probe melanocortin system roles in energy balance, thermogenesis, and hypothalamic regulation of appetite PubMed.
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Sexual Function Assays: Investigate MC4R‑driven penile erection mechanisms and central arousal circuits in preclinical models PubMed.
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Toxicology & Safety Profiling: Assess off‑target sympathomimetic effects, renal and muscle toxicity risks, and dose‑limiting tolerability in animal studies PubMed.
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Pharmacokinetic Method Development: Validate HPLC and bioassay techniques for biphasic disposition profiling and clearance rate determination PubMed.
Specifications
Attribute | Specification |
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Form | White to off‑white lyophilized powder |
Sequence | Ac‑His‑D‑Phe‑Arg‑Trp‑Lys‑Pro‑Val‑NH₂ |
Purity | ≥ 98 % by reverse‑phase HPLC |
Molecular Weight | 1024.18 g/mol |
Solubility | ≥ 20 mg/mL in water at 25 °C |
Storage | −20 °C, dry, protected from light (stable ≥ 2 yrs) |

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