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Research Use Only

Tanning Peptides

Melanocortin-receptor research peptides studied in the context of melanogenesis and pigmentation pathways.

Tanning peptides are research compounds studied for their interactions with melanocortin receptor systems, particularly in the context of pigmentation biology. This category features Melanotan 1 and Melanotan 2, both synthetic analogs of alpha-melanocyte-stimulating hormone that engage MC1R and related receptor subtypes. All compounds are supplied for in vitro and preclinical research use only.

Reviewed by the VivePeptides Research DeskLast reviewed

Research Catalog

Compounds in this collection

Melanotan 1 (MT1) research peptide vial

Melanotan 1 (MT1)

$50.00View
Melanotan 2 (MT2) research peptide vial

Melanotan 2 (MT2)

$50.00View

Research Overview

Tanning Peptides: A Research Category Overview

Tanning peptides represent a research category centered on synthetic analogs of alpha-melanocyte-stimulating hormone (alpha-MSH), a neuropeptide that regulates pigmentation through melanocortin receptor engagement. Preclinical investigation in this area has grown substantially as researchers examine the downstream effects of selective and non-selective melanocortin agonism on melanogenesis pathways.

The collection at VivePeptides features two structurally distinct compounds: Melanotan 1 (MT1), a linear alpha-MSH analog with selective affinity for the MC1R subtype, and Melanotan 2 (MT2), a cyclic lactam analog with broader melanocortin receptor activity spanning MC1R, MC3R, MC4R, and MC5R. Each compound occupies a distinct position in the receptor pharmacology literature, giving researchers the ability to design studies around receptor selectivity.

VivePeptides supplies both peptides at documented purity levels with certificates of analysis, supporting the reproducibility standards expected in peer-reviewed preclinical research.

Distinct Melanocortin Receptor Profiles

MT1 favors MC1R engagement while MT2 extends activity across MC1R, MC3R, MC4R, and MC5R, a pharmacological distinction that is a primary variable in preclinical study design. Selecting the appropriate compound requires matching receptor selectivity to the biological question under investigation.

Purity Documentation for Reproducible Research

Each tanning peptide at VivePeptides is accompanied by a certificate of analysis confirming identity and purity at the lot level. Documented quality data supports the reproducibility standards required in peer-reviewed preclinical research.

Storage and Reconstitution Requirements

Melanotan 1 and Melanotan 2 are supplied as lyophilized powders and should be stored at or below minus 20 degrees Celsius to preserve structural integrity. Reconstituted solutions should be aliquoted promptly and freeze-thaw cycles minimized to maintain research-grade quality.

Mechanism & Research Context

Mechanism Classes and Preclinical Research Context

What distinguishes the compounds in this collection is the degree of melanocortin receptor selectivity each analog exhibits, a variable with significant implications for study design. Melanotan 1 is a linear peptide with documented preferential binding at MC1R, making it the subject of preclinical research focused on pigmentation signaling with a narrower receptor engagement profile.

Melanotan 2, by contrast, is a cyclic lactam analog whose activity extends across multiple melanocortin receptor subtypes, and it has been investigated in preclinical models examining a broader range of melanocortin-mediated physiological pathways. Researchers selecting between the two compounds typically anchor that choice on the receptor specificity required by their experimental model.

Both peptides require careful reconstitution and cold-chain storage to maintain structural integrity across study timelines. VivePeptides provides handling and storage documentation alongside each compound to support protocol standardization across laboratory settings.

Research FAQ

Frequently asked questions

What are tanning peptides in a research context?

Tanning peptides are synthetic analogs of alpha-melanocyte-stimulating hormone studied in preclinical research for their interactions with melanocortin receptors involved in pigmentation biology. The category includes Melanotan 1 and Melanotan 2, which differ in receptor selectivity and structural conformation. All compounds in this category are supplied for laboratory research use only and are not intended for human or animal administration.

What is the difference between Melanotan 1 and Melanotan 2?

Melanotan 1 is a linear alpha-MSH analog with selective affinity for the MC1R receptor subtype, while Melanotan 2 is a cyclic lactam analog that engages multiple melanocortin receptors including MC1R, MC3R, MC4R, and MC5R. This difference in receptor selectivity profile makes each compound suited to different preclinical research objectives. Researchers studying isolated MC1R-mediated pigmentation signaling may favor MT1, while those investigating broader melanocortin system activity may find MT2 more appropriate for their experimental models.

How do researchers select between MT1 and MT2 for a preclinical study?

Selection between Melanotan 1 and Melanotan 2 in research settings is primarily determined by the receptor selectivity requirements of the experimental model. MT1 is preferred when investigators wish to isolate MC1R-mediated signaling, while MT2 is used when broader melanocortin receptor engagement is relevant to the study design. Both compounds are well characterized in peer-reviewed preclinical literature and are available with certificates of analysis to support documentation requirements.

What receptor mechanisms are investigated with tanning peptides?

Tanning peptides are investigated primarily as melanocortin receptor agonists, with research interest centered on the MC1R subtype for pigmentation-related signaling and on extended receptor panels including MC3R, MC4R, and MC5R for studies with broader scope. Preclinical literature has examined how agonism at these receptor subtypes influences downstream signaling cascades in melanocyte biology. The receptor pharmacology of both MT1 and MT2 is well characterized, providing a robust framework for experimental protocol development.

How should Melanotan peptides be stored and handled in a laboratory?

Melanotan 1 and Melanotan 2 are supplied as lyophilized powders and should be stored at or below minus 20 degrees Celsius to maintain structural integrity and peptide stability. Once reconstituted, solutions should be aliquoted and kept frozen, with repeated freeze-thaw cycles minimized to preserve research-grade quality. VivePeptides provides storage and handling documentation with each compound to support proper laboratory procedures.

Are tanning peptides classified as melanocortin peptides?

Tanning peptides are a subclass of melanocortin peptides, specifically those alpha-MSH analogs studied for their role in melanogenesis and MC1R engagement. The broader melanocortin peptide class encompasses compounds with diverse receptor profiles and research applications that extend beyond pigmentation biology. Melanotan 1 and Melanotan 2 are the two primary compounds in this tanning peptide research category, representing distinct structural and pharmacological approaches to melanocortin receptor agonism.

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