Molecular Characteristics
Complete Specifications
Structural Composition
Ac-Ser-Tyr-Ser-Nle-Glu-His-D-Phe-Arg-Trp-Gly-Lys-Pro-Val-NH₂
Physical Properties
Melanotan I is a synthetic linear peptide analog of alpha-melanocyte-stimulating hormone (α-MSH). Structural modifications including N-terminal acetylation, C-terminal amidation, and substitution of norleucine (Nle) enhance stability and resistance to enzymatic degradation under controlled research conditions. The presence of D-phenylalanine further contributes to structural persistence. Lyophilized storage and protection from moisture, light exposure, and repeated freeze–thaw cycles help preserve peptide integrity and maintain analytical consistency during laboratory applications.
Research Applications
Melanocortin Receptor Signaling Research
Melanotan 1 is utilized as a research peptide in studies examining melanocortin receptor activation and downstream intracellular signaling pathways. Laboratory investigations focus on its role in:
- MC1R Activation Models: Investigation of melanocortin-1 receptor binding dynamics and receptor selectivity profiles
- cAMP Signaling Studies: Evaluation of cyclic AMP–mediated intracellular cascades following receptor stimulation
- Receptor Specificity Research: Analysis of melanocortin receptor subtype interactions under experimental conditions
- Second Messenger Pathway Models: Examination of protein kinase A (PKA) activation mechanisms
- Receptor Desensitization Studies: Investigation of adaptive responsiveness following repeated stimulation
Experimental protocols commonly employ receptor-binding assays, melanocyte culture systems, and intracellular signaling analyses to characterize Melanotan 1–mediated melanocortin responses.
Pigmentation and Melanocyte Biology Research
Melanotan 1 has been extensively studied in research models examining melanogenesis and pigment-related cellular pathways. Key areas of investigation include:
- Melanin Synthesis Models: Evaluation of tyrosinase activity and pigment production signaling
- Melanosome Formation Studies: Investigation of organelle maturation and pigment transport processes
- UV-Responsive Pathway Research: Analysis of melanocortin signaling interactions within photobiology models
- Gene Expression Profiling: Research into transcriptional regulation of pigmentation-related genes
- Pigment Distribution Studies: Examination of cellular mechanisms influencing melanin dispersion
These studies utilize melanocyte cultures, enzyme activity assays, and gene expression analyses to evaluate pigmentation-related signaling dynamics.
Dermal and Photobiology Research
Melanotan 1 has also been explored in research models examining dermal cellular responses and photoprotective signaling mechanisms, including:
- Keratinocyte–Melanocyte Interaction Studies: Evaluation of cross-cellular communication in epidermal systems
- Oxidative Stress Models: Investigation of redox balance during UV-associated cellular stress
- DNA Damage Response Research: Analysis of signaling pathways activated in photobiological models
- Epidermal Differentiation Studies: Examination of cellular maturation pathways influenced by melanocortin signaling
Laboratory protocols assess pigmentation markers, oxidative biomarkers, and epidermal structural parameters using biochemical and imaging-based techniques.
Cellular Signaling and Regulatory Pathway Research
Additional research applications explore Melanotan 1’s influence on intracellular regulatory systems involved in melanocortin pathway balance and cellular homeostasis, including:
- MAPK and CREB Pathway Studies: Investigation of transcriptional activation cascades following receptor stimulation
- Gene Expression Profiling: Analysis of melanogenesis-associated transcription factors
- Receptor Sensitivity Research: Examination of signaling attenuation and adaptive mechanisms
- Integrated Melanocortin Network Models: Analysis of coordinated receptor interactions maintaining pigment regulation balance
Research in this domain focuses on understanding how Melanotan 1 influences melanocortin receptor signaling, pigmentation pathways, and dermal cellular responses under controlled experimental conditions.
Laboratory Handling and Storage Protocols
Lyophilized Powder Storage
- Store at –20°C to –80°C in the original, sealed vial
- Protect from light exposure and moisture
- A desiccated storage environment is recommended
- Stability data suggests extended stability when stored at −20 °C or below.
Reconstituted Solution Storage
- Short-term storage: Up to 7 days at 4°C
- Long-term storage: Store at –20°C in aliquots
- Use single-use aliquots to preserve peptide integrity
- Minimize freeze–thaw cycles; single-use aliquots are strongly recommended
Stability Characteristics
Melanotan I is a synthetic peptide research compound that demonstrates stable handling characteristics when managed according to standard peptide laboratory protocols. Proper cold storage of the lyophilized material, protection from light, careful reconstitution, and minimized freeze–thaw exposure help preserve structural integrity and solubility. When handled appropriately, Melanotan I supports consistent use in in vitro and analytical research applications.
Frequently Asked Questions
What is Melanotan I?
Melanotan I is a synthetic peptide analog of α-MSH designed to activate melanocortin receptors in experimental models. It is commonly used in research focused on pigmentation-related signaling pathways.
What is Melanotan I commonly researched for?
In laboratory and preclinical settings, Melanotan I is studied for:
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Melanocortin receptor (MC1R) activation
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Melanogenesis pathway investigation
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Pigment cell signaling research
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UV-response and photoprotection pathway models
All applications are exploratory and conducted in controlled research environments.
Is Melanotan I the same as Melanotan II?
No. Melanotan I and Melanotan II are structurally different peptides. While both interact with melanocortin receptors in research models, their receptor selectivity and signaling profiles differ.
Is Melanotan I the same as Afamelanotide?
Melanotan I is structurally related to Afamelanotide, a peptide developed for specific clinical applications. However, research-grade Melanotan I products are not pharmaceutical preparations and must not be marketed as approved medications.
How is Melanotan I supplied?
Melanotan I is typically supplied as a lyophilized (freeze-dried) powder in sealed research vials to maintain stability during storage and shipment.
How should unreconstituted Melanotan I be stored?
Lyophilized Melanotan I should be stored:
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Long-term: −20 °C to −80 °C
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Short-term: 2–8 °C
Keep vials sealed and protected from light and moisture until use.
How should reconstituted Mazdutide be handled and stored?
Once reconstituted:
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Store at 2–8 °C for short-term laboratory use
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For extended storage, aliquot and freeze at −20 °C or below
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Minimize freeze–thaw cycles using single-use aliquots
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Gently swirl to mix; avoid vigorous agitation
Does Melanotan I require a Certificate of Analysis (COA)?
Yes. A Certificate of Analysis (COA) should be available for each batch, verifying the identity and purity of each peptide component within the blend to ensure research quality and traceability.
Is Melanotan I FDA-approved?
Research-grade Melanotan I is not FDA-approved as a drug, supplement, or therapeutic product. It is sold exclusively as a research compound and must not be marketed or used for diagnostic, therapeutic, or consumption purposes.
This product is not for human consumption. It is sold strictly for research and educational purposes and is not intended to diagnose, treat, cure, or prevent any disease.
Any clinical data or research information referenced on this page is derived from peer-reviewed scientific literature and official publications. This information is provided for educational reference only and does not constitute medical advice or product claims.
By purchasing this product, you acknowledge that you are a qualified researcher and agree to use it in full compliance with all applicable laws and regulations.
