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Pigmentation

Melanotan II

99.3%+ · COA VerifiedIn stock
CAS 121062-08-6 · For laboratory research use only
$39.00$31.20/ vialWELCOME20 −20%
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Batch-specific Certificate of Analysis included with every shipment — third-party tested for 99.3% purity, ID, and quantity.
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Third-party HPLC, mass-spec, and endotoxin testing on every batch — with the Certificate of Analysis included, not on request.

99.3%+ verified purity HPLC + Mass Spec Endotoxin tested
Overview+

Melanotan II is a synthetic analog of alpha-melanocyte-stimulating hormone studied for its role in melanocortin-receptor signaling and pigmentation pathways. As a cyclic, stabilized analog it engages multiple melanocortin receptors, which broadens the range of signaling it is used to investigate.

History+

Developed from structure-activity research on alpha-MSH at the University of Arizona, Melanotan II was studied as a melanocortin agonist affecting pigmentation and, in observation, behavioral signaling. It later served as the structural predecessor to bremelanotide, making it a reference point for the melanocortin-agonist class.

Structure & specifications+
CAS #: 121062-08-6
Formula: C₅₀H₆₉N₁₅O₉
MW: 1024.18 g/mol
PubChem ID: 92432
Research findings+

Melanotan II has been examined in receptor-pharmacology models for MC1R through MC5R agonism, melanogenesis signaling, feeding behavior, and melanocortin-pathway dynamics. Its broad activity across the melanocortin-receptor family is the central research feature, letting investigators study several receptor subtypes with a single stabilized molecule. As the structural forerunner of later melanocortin agonists, it functions as a well-characterized reference in receptor-pharmacology work.

Key areas of research
  • →Signaling: Melanocortin-receptor agonism (MC1R to MC4R)
  • →Dermal: Melanogenesis pathways
  • →Systemic: Feeding and behavioral signaling
Shipping, storage & handling+

Same-day dispatch before 2:00 PM CST, Monday through Saturday. Store lyophilized vials at −20°C, protected from light; reconstituted solutions at 2–8°C. Discreet, temperature-safe packaging. Guaranteed delivery with free reshipment.

References+
  • Hruby VJ. et al. (1995). Cyclic alpha-MSH analog characterization.
  • Dorr RT. et al. (1996). Melanotropic activity in experimental models.
  • Hadley ME. & Dorr RT. (2006). Review of melanocortin-agonist pharmacology.

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Third-party COA (HPLC + Mass Spec)
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✕Rarely, or on request
Verified purity
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Endotoxin tested
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Frequently asked questions

What's the actual amount in each vial?+
Each vial contains the labeled mass of lyophilized peptide. Selected sizes appear above the price.
Are additional supplies needed?+
Reconstitution requires bacteriostatic water and appropriate sterile research labware – not included.
How long does a vial last?+
Sealed lyophilized vials are stable at −20°C for 24 months. Once reconstituted, store at 2–8°C and use within 28 days.
Does the product come with instructions?+
Each shipment includes the batch-specific Certificate of Analysis and recommended handling protocol.
What purity level is guaranteed?+
≥ 99% by reverse-phase HPLC (UV-220nm), confirmed via ESI-TOF mass spectrometry.
How should I store these products?+
Store sealed vials at −20°C, protected from light. Reconstituted solutions at 2–8°C.
What are peptides and how do they work?+
Peptides are short chains of amino acids that occur naturally in organisms, where they act as messengers in many biological systems. While some peptides have been developed for medical use, laboratory research focuses on understanding their activity at the cellular level, examining how they impact essential processes in vitro.
Do these products come with instructions?+
Products from Fast Track Labs are supplied without usage instructions, as they are designated solely for in vitro laboratory research and prohibited by law for human or animal consumption. Any misuse or unlawful application of these products will result in permanent denial of service.
How long do products take to deliver?+
Orders are typically processed and shipped within 24 hours, Monday through Saturday. Delivery times vary by location, but most domestic orders arrive within 3–5 business days. You'll receive tracking information as soon as your order ships.

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