
Melanotan-1 is a synthetic analog of alpha-melanocyte-stimulating hormone (α-MSH) used in laboratory research involving melanocortin biology, melanocortin receptors, and cellular pigmentation pathways. It is commonly associated with the research compound [Nle4-D-Phe7]-α-MSH and is also known in scientific literature as Melanotan I or MT-I. Helix Bio offers research-use-only peptide materials intended for controlled laboratory investigation. Product-specific analytical specifications should always be confirmed using the applicable lot documentation before experimental use.
HPLC certified
Independent analysis
Highest standard
Full traceability
Melanotan-1 is a synthetic melanocortin peptide developed from the structure of α-MSH. Scientific research has focused on its interaction with melanocortin receptors, particularly melanocortin 1 receptor (MC1R), a G-protein-coupled receptor strongly associated with melanocyte biology and pigmentation signaling.
In research literature, Melanotan I is commonly identified as [Nle4-D-Phe7]-α-MSH, also written as NDP-MSH. Structural modifications to the natural α-MSH sequence were investigated to alter receptor activity and peptide stability. Research has demonstrated activity across several melanocortin receptor subtypes, including MC1R, MC3R, MC4R, and MC5R, making the compound relevant to broader melanocortin receptor studies.
Melanotan-1 should be distinguished from Melanotan II. Although both compounds are synthetic α-MSH analogs, they have different structures and receptor activity profiles. Melanotan I is generally associated with the NDP-MSH structure, while Melanotan II contains additional structural modifications and is a separate research compound.
For laboratories studying receptor-ligand interactions, peptide structure-function relationships, melanocortin signaling, or cellular pigmentation mechanisms, Melanotan-1 provides a defined synthetic peptide model for controlled experimental work.
Melanotan-1 is a modified α-MSH analog containing the substitutions norleucine (Nle) at position 4 and D-phenylalanine (D-Phe) at position 7. The resulting structure is commonly represented as [Nle4-D-Phe7]-α-MSH.
The biological relevance of this peptide is closely connected to melanocortin receptor research. MC1R is expressed predominantly in melanocytes and participates in signaling pathways associated with melanogenesis. Experimental studies of MC1R have helped researchers investigate how endogenous and synthetic melanocortin ligands interact with receptor systems.
Melanotan-1 is intended for laboratory and scientific research only. Potential research contexts include:
The compound should be evaluated according to the requirements of the specific experimental model rather than assumed to produce a particular biological outcome.
Melanotan-1 is of particular interest to researchers because its structure has been extensively studied within the melanocortin field. Published research provides a substantial scientific background for investigating modified α-MSH peptides and their interactions with melanocortin receptor systems.
Melanotan-1 has a well-established presence in melanocortin research, making it useful when a laboratory needs a defined synthetic α-MSH analog for controlled experimental investigation.
Its research value comes from several characteristics:
Defined Molecular Framework
The Nle4 and D-Phe7 modifications distinguish Melanotan-1 from native α-MSH and make it useful for studying how structural changes influence melanocortin receptor activity.
Receptor Research Relevance
Published studies have examined Melanotan-1 and related melanocortin analogs across multiple receptor subtypes. This makes the compound relevant to receptor pharmacology and ligand-comparison experiments.
Established Scientific Literature
Melanotan-1 has been investigated in peer-reviewed research for decades, providing researchers with background literature when designing experiments involving α-MSH analogs and melanocortin signaling.
Research-Only Positioning
A clearly defined research-use-only product is appropriate for laboratories that require peptide reagents for non-clinical research rather than materials marketed for human use.
Melanotan-1 is intended for qualified users conducting legitimate scientific or laboratory research, including:
The product is not intended for consumers seeking tanning, cosmetic, therapeutic, or other personal-use effects.
Knowledge Base
Knowledge Base
Knowledge Base
Knowledge Base
Knowledge Base
Knowledge Base
Knowledge Base
Knowledge Base
Knowledge Base
Knowledge Base
Knowledge Base

Cyclic peptides resist protease degradation and reach undruggable targets. Learn how peptide cyclization works and why stability improves. Explore the research.

How continuous flow, automation, enzymatic routes and AI are changing peptide synthesis technology, and what it means for research peptide purity and supply.

AI now designs peptides from scratch. How AlphaFold 3, RFdiffusion and protein language models reshaped peptide discovery in 2026 — research use only.