Melanotan II Testing Services
Melanotan II is a synthetic analog of alpha-melanocyte-stimulating hormone (α-MSH). It is a cyclic peptide that acts on melanocortin receptors and has been studied for various biological effects.
Research Applications
Common research areas for Melanotan II
- Melanocortin receptor research
- Pigmentation studies
- Appetite and metabolism research
- Sexual behavior studies
Peptide Information
Molecular details and sample requirements
Sequence / Structure:
Ac-Nle-cyclo[Asp-His-D-Phe-Arg-Trp-Lys]-NH2
Molecular Weight
1024.18 g/mol
Formula
C50H69N15O9
Recommended Purity
≥98%
Sample Size
0.5-1 mg lyophilized
Our Melanotan II Testing Services
Comprehensive analytical testing to ensure Melanotan II quality and purity
Purity Testing
HPLC analysis to verify Melanotan II purity levels
Identity Verification
Mass spectrometry to confirm molecular identity
Third-Party Verification
Independent COA verification for Melanotan II
Certificate of Analysis
Official US laboratory documentation
Ready to test your peptides?
Send your peptide name, sample count, and the tests you need. We return a fixed-price quote, usually within one business day.
- validated analytical methods, independent of any supplier
- 9-11 business day standard turnaround
- Traceable COA with chromatograms and method parameters
Melanotan II Testing Methodology
Our analytical workflow for Melanotan II follows USP <1225> guidance for validated chromatographic methods. Each lot is processed by a credentialed analyst with documented chain of custody.
Step 1
Sample intake & chain of custody
Your Melanotan II sample (0.5-1 mg lyophilized) is logged at our Florida lab with a unique ID, photographed, and stored at -20 °C until analysis.
Step 2
Reverse-phase HPLC purity
Melanotan II is dissolved in mobile phase and run on a C18 column with a water/acetonitrile gradient containing 0.1% TFA. UV detection at 214 nm quantifies the main peak and any related impurities.
Step 3
LC-MS identity confirmation
An aliquot is analyzed by liquid chromatography-mass spectrometry. The observed monoisotopic mass is compared against the theoretical molecular weight (1024.18 g/mol) for Melanotan II to confirm identity.
Step 4
Impurity profiling & reporting
Related substances, truncations, and oxidation products are quantified. Findings are compiled into a signed Certificate of Analysis with chromatograms, mass spectra, and analyst interpretation.
Melanotan II Purity Notes
Recommended research-grade purity for Melanotan II is ≥98%. Lot-to-lot variation is common with solid-phase synthesis, so independent verification matters.
Common impurities to watch
- Truncated sequences from incomplete coupling
- Deletion peptides missing one or more residues
- Oxidation of methionine, tryptophan, or cysteine
- Residual TFA, acetate, or solvent counter-ions
- Aggregates and dimers from improper storage
What our COA confirms
- Main peak purity by HPLC area %
- Observed vs theoretical mass (1024.18 g/mol)
- Named impurities ≥ 0.1% area
- Net peptide content where applicable
- Method, column, and instrument metadata
Melanotan II Handling, Storage & Safety
Guidance below is for laboratory and research personnel only. Melanotan II is supplied for research use and is not intended for human or veterinary use.
Storage
Store lyophilized Melanotan II at -20 °C, protected from light and moisture. After reconstitution, aliquot and store at -80 °C; avoid repeated freeze-thaw cycles.
Reconstitution
Reconstitute in bacteriostatic or sterile water in a clean environment. Allow vials to reach room temperature before opening to prevent moisture condensation on the powder.
PPE & shipping
Handle with gloves, lab coat, and eye protection. Ship samples to ACS overnight on dry ice or cold packs in a rigid, leak-proof container with a packing slip referencing your quote.
This page is informational and does not constitute medical advice. Consult your institution's safety officer and SDS before working with Melanotan II.
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