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Melanotan II Peptide | Melanotan II 10mg

Melanocortin II (MT-II) is a synthetic peptide analog used in laboratory research to investigate its interactions with melanocortin receptor pathways and peptide signaling mechanisms. This product is not intended for human, diagnostic or therapeutic use.

Melanotan II Peptide Specifications

PropertyValue
NameMelanotan II
CAS Number121062-08-6
Peptide SequenceXDHFRWK
Molecular FormulaC50H69N15O9
Molecular Weight1024.2 g/mol
PubChem CID92432
SynonymsMelanotan II, 121062-08-6, Melanotan-II, UPF5CJ93X7, DTXSID90153135
Vial SizeMelanotan II 10mg
Purity (HPLC)≥99.0%

Melanotan II Peptide Features

  • Specific Applications: Precisely tailored for laboratory experimentation, in vitro assays, and scientific evaluation within approved research facilities.
  • Lyophilized Peptide Format: We supply our peptides as sterile, vacuum-sealed freeze-dried cakes in order to preserve molecular structural integrity and maximize stability.
  • Melanotan II Storage Protocol: Melanotan II has proven highly stable at subzero temperatures; therefore it must be stored at -20 to ensure long-term preservation and prevent degradation.
  • High Purity Laboratory Reagent: Produced under stringent quality control standards to guarantee accurate composition analysis and predictable experimental baseline data.
  • Receptor Affinity Profiles: Receptor affinity profiles are often employed in biochemical research as an analytical tool for investigating the mechanics, binding kinetics and pathways associated with melanocortin receptor systems.
  • Strictly Non-Clinical: These products do not contain additives, preservatives, or structural carriers suitable for therapeutic administration; as a result, their usage should remain limited solely to non-clinical uses such as human and veterinary applications.

Melanotan II Overview

Melanotan II Peptide has long been recognized for its molecular and biochemical studies in life sciences research. Melanotan II was initially created by researchers seeking to investigate the physiological pathways of endogenous peptide hormones; it can be classified as a synthetic analogue of naturally occurring a-melanocyte-stimulating hormone (a-MSH). Lab environments often use synthetic modifications of native hormone sequences in order to increase structural stability, extend biological half-lives and change receptor binding profiles. Such modifications allow life science researchers to observe sustained molecular interactions which would otherwise be difficult to document with highly unstable endogenous ligands.

Melanotan II has become an indispensable chemical tool in modern laboratory research, serving as a crucial chemical instrument for mapping out downstream cellular signals. With its distinctive structural configuration containing a lactam bridge that introduces conformational rigidity, the compound changes biochemical behavior compared with linear peptide sequences making it suitable for competitive binding studies, mass spectrometry calibrations, and high-throughput screening assays.

Melanotan II samples should always be highly purified before use in experimental studies to minimize experimental variables and ensure accurate data collection. Impurities found within low-grade peptide samples can cause nonspecific receptor binding or introduce compounding variables that skew structural data; to combat this risk, lab variants of high purity have become standard among institutions in the US, Canada and Australia to ensure all observed data points come directly from intended peptide-receptor interactions and researchers use these synthesized variations as accurate baselines for how specific amino acid arrangements influence binding kinetics across diverse cellular cultures.

What Is Melanotan II?

Melanotan II is a synthetically modified cyclic peptide belonging to the class of melanocortin receptor agonists. Biochemically, its structure mimics that of endogenous melanocortins but has distinct structural differences meant to increase structural resilience against proteolysis (enzymatic protein degradation into amino acids).

Melanotan II’s scientific development began as part of early academic attempts to synthesize a stable, long-acting molecule capable of engaging with the natural melanocortin system within the body. Naturally occurring a-MSH has an extremely short half-life in solution, making laboratory analysis complex. By replacing specific amino acids within its linear sequence with those cyclizing its chain instead, researchers were able to create an improved molecular structure that exhibits increased stability.

Histories of scientific interest for this compound center around its structural properties and role as a non-selective agonist. It serves as a benchmark compound in laboratories studying G-protein coupled receptors (GPCRs), helping scientists better understand how structural modifications influence speed, duration and intensity of chemical signals at the cellular level.

Melanotan II In Scientific Research

Melanotan II has become an indispensable tool in modern laboratory investigations for exploring the distribution, function, and signaling cascades of melanocortin receptor subtypes MC1, MC3, MC4, and MC5. As it acts as a nonselective agonist at all these specific receptor sites simultaneously, it offers an ideal comparative baseline to investigate competitive inhibition and cross-talk among receptor sites.

Experimental peptide studies often use Melanotan II to observe the activation of adenylate cyclase, an essential intracellular signaling enzyme. When this peptide binds to its target cell surface receptor, it triggers an event chain that changes levels of cyclic adenosine monophosphate (cAMP) within cells – researchers monitor these shifts as indicators of its potency and efficacy across varying environments.

As such, handling this molecule precisely in research methodologies is of paramount importance. Alterations caused by factors like solvent pH, salt concentrations and thermal variances can dramatically alter its three-dimensional conformation and binding affinity; scientists often utilize analytical tools like High-Performance Liquid Chromatography (HPLC) or Mass Spectrometry (MS) as part of long-term observational timeframes in order to verify chemical profiles throughout these timelines.

Scientific Background

To gain an in-depth knowledge of Melanotan II and its scientific background, one must examine its amino acid sequence and structural configuration. Peptides represent themselves by their systematic amino acid sequence:

Ac-Nle-cyclo[Asp,His,D-Phe-Arg-Trp-Lys]-NH2

D-Phe is a key structural modification. By inverting its stereochemistry and linking Aspartate (Asp) and Lysine (Lys) residues together in a cyclized chain, this inversion gives rise to unique resistance against rapid enzymatic degradation of molecules containing this modification.

Cyclized Core via Lactam Bridge - Melanotan II

Melanocortin systems intersect with various homeostatic pathways in animal models. Researchers are exploring how activation of central MC4 receptors influences metabolic rates, energy balance and feeding behavior of rodent lineages. By employing Melanotan II as an experimental control, life science researchers can compare its broad-spectrum activation against newly synthesized mono-target compounds aimed at understanding receptor mechanics further.

Storage and Handling Guidelines

Proper Melanotan II storage is critical in order to avoid structural cleavage and denaturation, since lyophilized peptides remain highly vulnerable to environmental fluctuations. Therefore, for maximum effectiveness it should be stored at sub-zero temperatures, ideally between -20 and -70. Any exposure to ambient room temperatures should only occur for brief durations necessary for laboratory allocation purposes.

Moisture protection is also of great importance. Vials should remain vacuum sealed until just before deployment of experiments to prevent ambient humidity from adding moisture to lyophilized cakes, leading to rapid hydrolytic degradation. Furthermore, direct UV light exposure may alter aromatic amino acid residues (such as Tryptophan and Phenylalanine ). For this reason they must be stored in opaque storage containers or boxes until time for deployment of experiments.

As part of laboratory handling, standard sterile techniques must be adhered to. When preparing compounds for analytical testing, vials should acclimate to room temperature before breaching their seals; this simple step helps avoid condensation of atmospheric moisture directly onto cold peptide cakes. Furthermore, any manipulation should avoid vigorous physical agitation as mechanical shearing can weaken fragile bonds in peptide bonds.

Frequently Asked Questions (FAQs)

What Is Melanotan II?

Melanotan II is an engineered synthetic cyclic heptapeptide designed as an analogue of endogenous hormone a-MSH for use as an analytical standard and melanocortin receptor agonist in laboratory research environments.

How should Melanotan II be stored?

For maximum shelf life and effectiveness, Melanotan II should be stored lyophilized at an ambient temperature of -20℃ or lower away from direct light and moisture sources. Alternatively, un-reconstituted vials may be stored between 2℃ – 8 ℃degrees for limited periods.

What is Lyophilized Peptide?

A lyophilized peptide is defined as any compound which has undergone a special freeze-drying process in order to remove water content while maintaining molecular structure, significantly increasing shelf-life and chemical stability during transit and storage.

Is Melanotan II intended for research use?

Melanotan II is intended solely for laboratory research, in vitro diagnostic evaluation and scientific experimentation; therefore, its use cannot be approved or safe for human or veterinary consumption.

What is Peptide Reconstitution?

Peptide reconstitution refers to the laboratory process of adding liquid solvent or bacteriostatic medium to a lyophilized peptide cake to reconstitute it back to liquid state for pipetting assays, concentration testing, or cell culture applications.

Can this product be used for clinical trials?

No. This compound is laboratory-grade research chemical; as such it does not possess the required certification, current Good Manufacturing Practice (cGMP), tracking or regulatory approvals required for human clinical trials or medical applications.

What are the Causes of Peptide Degradation?

Peptide degradation can be hastened by prolonged exposure to elevated temperatures, repeated freeze-thaw cycles after reconstitution, direct ultraviolet light exposure or introduction into highly acidic or basic solvent environments.

Why is Melanotan II Cyclized?

Cyclization of Melanotan II’s amino acid chain provides conformational rigidity that minimizes its vulnerability to enzymatic breakdown, permitting prolonged observation during receptor affinity testing.

Research Notes

Laboratory Compliance Notice: The compound detailed on this product listing is supplied exclusively for scientific exploration, academic inquiries, and chemical profiling. All purchasing institutions must maintain appropriate laboratory containment protocols and ensure that personnel are fully trained in the handling of analytical chemical components. This material is entirely restricted from domestic, clinical, cosmetic, or therapeutic environments.

Scientific References

  • Peer-Reviewed Journals: Consult publications such as the Journal of Medicinal Chemistry, Peptides, and the European Journal of Biochemistry for peer-reviewed literature detailing the synthesis, receptor interactions, and molecular dynamics of melanocortin receptor agonists.
  • Research Institutions: Review academic whitepapers and chemical monographs provided by established molecular biology departments, structural biology networks, and end-user university repositories across the United States, Canada, and Australia.
  • Scientific Databases: Cross-reference biochemical properties, mass spectrometry sheets, and structural profiles via open-access repositories including PubChem (CID 92432), ChemSpider, and the National Center for Biotechnology Information (NCBI) portal.

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⚠ Intended Use

All products are intended for in vitro laboratory research use only.
They are strictly prohibited for administration to humans or animals, and must not be used for diagnostic, therapeutic, or clinical applications.

Storage and Handling

Store lyophilized powder at –20°C.
After reconstitution (for laboratory analysis), store at 2–8°C.
Avoid repeated freeze-thaw cycles.
Maintain aseptic technique during handling.

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