Melanotan II 10mg Research Peptide
Melanotan II 10mg research material can be described from a scientific perspective through its molecular identity, peptide structure, analytical characteristics, and quality-control documentation.
Melanotan II is a synthetic cyclic heptapeptide. PubChem identifies the compound as Melanotan II, with CAS number 121062-08-6, molecular formula C₅₀H₆₉N₁₅O₉, and molecular weight 1,024.2 g/mol. PubChem also reports an exact/monoisotopic mass of approximately 1,023.5403 Da.
For laboratory researchers, these identifiers provide a starting point for analytical characterization. Additional documentation such as HPLC chromatograms, mass-spectrometry results, lot information, and a Certificate of Analysis (COA) can provide information about the particular material being evaluated.
Melanotan II should be distinguished from its acetate salt. PubChem lists Melanotan II acetate separately with a molecular weight of approximately 1,084.2 g/mol, demonstrating why the chemical form should be specified when reporting analytical data.
Melanotan II 10mg: Scientific Overview
Melanotan II is a synthetic peptide related structurally to melanocortin peptides. PubChem classifies it as a cyclic heptapeptide and provides the condensed structural notation:
Ac-Nle-Asp-His-D-Phe-Arg-Trp-Lys-NH₂
Its sequence notation is:
XDHFRWK
The molecule contains seven amino-acid residues in its peptide framework, together with structural modifications that distinguish it from a simple unmodified linear peptide.
For research purposes, the most useful product information is therefore not a human-use claim but a clear description of:
- Chemical identity
- Molecular formula
- Molecular weight
- Exact mass
- Peptide sequence
- Structural characteristics
- HPLC characterization
- Mass-spectrometry characterization
- Lot identification
- COA documentation
This approach also creates a stronger scientific information architecture for an SEO product page.
Melanotan II Molecular Formula and Molecular Weight
According to the current PubChem record, Melanotan II has the following molecular specifications:
| Property | Melanotan II |
|---|---|
| Molecular formula | C₅₀H₆₉N₁₅O₉ |
| Molecular weight | 1,024.2 g/mol |
| Exact mass | 1,023.54026884 Da |
| Monoisotopic mass | 1,023.54026884 Da |
| CAS number | 121062-08-6 |
| PubChem CID | 92432 |
| Peptide sequence notation | XDHFRWK |
PubChem’s molecular-weight value is calculated from the molecular formula, while the exact mass represents the calculated monoisotopic mass.
Why molecular weight matters in peptide research
Molecular weight is an important reference point for analytical chemistry. Researchers can compare expected molecular-mass information with experimentally observed data from analytical instruments.
However, the expected mass must correspond to the actual chemical form being analyzed.
For example, Melanotan II acetate is reported separately by PubChem at approximately 1,084.2 g/mol.
Therefore, a laboratory record should identify whether the material is the parent compound or a salt/other specified form.
Melanotan II Molecular Structure
Melanotan II has a cyclic peptide structure rather than behaving simply as a conventional linear seven-residue peptide.
PubChem provides both two-dimensional structural information and a condensed representation of the molecule. The reported sequence notation is XDHFRWK, while the full structural description includes the N-acetyl and C-terminal amide modifications.
The molecular structure is particularly relevant when interpreting:
- Peptide identity
- Molecular-mass data
- Analytical standards
- Structure databases
- Computational chemistry
- Peptide characterization
- LC-MS results
- Chemical reference information
A product page should avoid presenting a generic peptide diagram as though it were a laboratory test result. If a structural graphic is used, it should be labeled as a scientific representation rather than experimental evidence.
Melanotan II Peptide Sequence
The PubChem sequence notation for Melanotan II is:
XDHFRWK
PubChem’s more detailed condensed representation is:
Ac-Nle-Asp-His-D-Phe-Arg-Trp-Lys-NH₂.
The difference between a simple sequence abbreviation and the complete modified-peptide representation is important.
A researcher looking only at the seven-letter sequence could miss structural modifications that contribute to the identity of the actual compound.
For this reason, professional scientific documentation should ideally present:
Compound name → sequence → structural representation → molecular formula → molecular weight → analytical confirmation.
Melanotan II HPLC Analysis
High-performance liquid chromatography (HPLC) is widely used in analytical chemistry to separate compounds and characterize chromatographic profiles.
For a Melanotan II research material, HPLC documentation may include:
- Sample identification
- Lot number
- Analytical method
- Retention time
- Chromatographic peaks
- Main peak
- Reported purity
- Test date
- Laboratory identification
A chromatogram can help researchers examine the separation profile of a tested sample.
HPLC purity is not the same as identity
This distinction is important.
A reported HPLC purity percentage describes the chromatographic result under a particular analytical method. It does not, by itself, establish every aspect of molecular identity.
For stronger analytical characterization, researchers may consider multiple complementary techniques, such as:
HPLC → chromatographic profile
Mass spectrometry → molecular-mass evidence
COA → lot-specific documentation
The exact analytical methods and acceptance criteria should come from the laboratory performing the testing.
Melanotan II Mass Spectrometry
Mass spectrometry can provide molecular-mass information useful for peptide characterization.
For parent Melanotan II, PubChem reports:
Calculated molecular weight: 1,024.2 g/mol
Exact/monoisotopic mass: 1,023.54026884 Da.
An analytical laboratory may compare experimentally observed mass-to-charge signals with expected values.
Mass-spectrometry documentation can include:
- Instrument type
- Ionization method
- Observed m/z
- Expected mass
- Charge state
- Retention time where applicable
- Sample/lot identification
- Analytical interpretation
The interpretation depends on the analytical method and chemical form. Researchers should therefore avoid treating one displayed mass spectrum as universal proof of identity for every Melanotan II material.
Melanotan II Certificate of Analysis
A Certificate of Analysis (COA) provides lot-specific analytical documentation.
For a research material, useful COA fields can include:
Product identification
The scientific/product name and relevant identifier.
Lot number
A unique identifier connecting the documentation to a particular batch.
Appearance
A description of the material’s physical appearance where applicable.
Analytical testing
The methods used to characterize the material.
HPLC result
The reported chromatographic analysis.
Mass spectrometry
Identity or molecular-mass characterization where performed.
Test date
The date on which testing was conducted.
Quality-control information
Relevant laboratory or quality-control documentation.
A COA should correspond to the actual lot being documented. Generic documents should not be presented as though they represent every production batch.
Melanotan II Analytical Testing
A robust peptide-characterization strategy can combine several types of analytical information.
HPLC
Provides chromatographic separation and a basis for evaluating the sample profile.
LC-MS or mass spectrometry
Provides molecular-mass information that can complement chromatographic analysis.
Structural information
Provides a reference for understanding the compound’s molecular architecture.
COA
Connects analytical results to a particular lot or batch.
This combination can produce a more informative scientific record than relying on a single purity number.
Melanotan II Research Context
Melanotan II has appeared in scientific literature and chemical databases as a synthetic melanocortin-related peptide. PubChem describes it as an analog of alpha-melanotropin and provides extensive chemical and structural information.
For an SEO page intended for researchers, biotechnology laboratories, universities, and analytical laboratories, the content should concentrate on scientific characterization rather than making claims about cosmetic tanning or human outcomes.
Appropriate research topics include:
- Synthetic peptide chemistry
- Melanocortin-related peptide research
- Molecular structure
- Peptide characterization
- Analytical chemistry
- HPLC method development
- Mass spectrometry
- Reference-material characterization
- Peptide quality-control procedures
- Computational peptide research
This gives the page useful scientific depth while keeping the content focused on research information.
Melanotan II 10mg Quality Considerations
Researchers evaluating peptide materials can consider several documentation factors.
1. Correct chemical identity
The material should have a clearly defined scientific identity.
2. Chemical form
The documentation should distinguish parent Melanotan II from salts or other forms where relevant.
3. Lot traceability
The material should be connected to an identifiable batch or lot.
4. Analytical documentation
HPLC and/or mass-spectrometry results can provide analytical information about the tested sample.
5. COA availability
A lot-specific COA can provide a convenient summary of analytical testing.
6. Transparent specifications
Product documentation should avoid unsupported purity, identity, or performance claims.
7. Appropriate research labeling
The website should accurately describe the intended research context and should not use research terminology as a substitute for regulatory compliance.
Research-Use-Only Statement
Melanotan II 10mg research material described on this page is intended solely for legitimate laboratory and scientific research. It is not intended for human or veterinary use, self-administration, cosmetic tanning, diagnosis, treatment, cure, mitigation, or prevention of disease. This page does not provide dosing, administration, reconstitution, injection, or human-use instructions.
This wording is intentionally narrow. FDA enforcement materials demonstrate that simply placing “research use only” on a product does not necessarily determine how regulators view a product’s intended use. In a March 2026 warning letter, FDA stated that website evidence can establish intended human-drug use despite research-only labeling.
FDA also currently lists Melanotan II among substances for which compounded drugs may present safety concerns, specifically noting potential immunogenicity risks associated with aggregation or peptide-related impurities.
Accordingly, the safest SEO strategy is to keep this page centered on scientific identity, analytical testing, documentation, and research information, rather than human-use marketing.
Frequently Asked Questions
What is Melanotan II 10mg research material?
Melanotan II 10mg refers to a labeled quantity of Melanotan II research material. Scientific documentation can describe its molecular structure, formula, molecular weight, sequence, analytical testing, and lot information.
What is the molecular weight of Melanotan II?
PubChem reports a molecular weight of 1,024.2 g/mol for Melanotan II. Its calculated exact/monoisotopic mass is approximately 1,023.5403 Da.
What is the molecular formula of Melanotan II?
The molecular formula reported by PubChem is C₅₀H₆₉N₁₅O₉.
What is the Melanotan II peptide sequence?
PubChem gives the sequence notation as XDHFRWK and provides the more detailed modified-peptide representation Ac-Nle-Asp-His-D-Phe-Arg-Trp-Lys-NH₂.
What is the CAS number for Melanotan II?
The CAS number listed by PubChem is 121062-08-6.
What is Melanotan II HPLC testing?
HPLC is an analytical technique used to separate compounds and evaluate chromatographic profiles. For peptide research, HPLC may be used as part of analytical characterization.
Why use mass spectrometry for Melanotan II?
Mass spectrometry can provide molecular-mass information that can complement HPLC and other analytical methods.
What is a Melanotan II COA?
A Melanotan II COA, or Certificate of Analysis, is documentation summarizing analytical testing associated with a particular lot or batch.
Is Melanotan II acetate the same molecular weight as Melanotan II?
No. PubChem reports approximately 1,024.2 g/mol for parent Melanotan II and approximately 1,084.2 g/mol for Melanotan II acetate.
Does “research use only” automatically make a product compliant?
No. FDA enforcement materials indicate that regulators can consider the broader claims and marketing surrounding a product when determining intended use.