What is Melanotan II?
Melanotan II (MT-II — synthetic alpha-MSH analog) is a 7-amino acid cyclic lactam peptide. Synthetic alpha-MSH analog activating MC1R (melanogenesis — skin pigmentation, UV photoprotection) and MC4R (appetite suppression, energy balance, sexual function). Broader melanocortin receptor profile than selective MC1R agonists, with both peripheral pigmentation and central appetite/sexual function effects.
Research Applications
MC1R Melanogenesis
Eumelanin production, UV photoprotection, pigmentation biology
MC4R Central Effects
Hypothalamic appetite suppression, energy balance via MC4R
Sexual Function
Central MC4R-mediated sexual arousal and function pathways
Melanocortin Selectivity
MC1R + MC4R dual vs selective receptor comparison
Skin Biology
Pigmentation research, melanocyte activation, photoprotection
Quick Specs
| Form |
C₅₀H₆₉N₁₃O₁₀ |
| Purity |
≥99% by HPLC — every batch |
| CAS Number |
121062-08-6 |
| Molecular Weight |
MS molecular weight confirmed — every batch |
| Specification |
≥99% by HPLC — every batch |
| Shelf Life |
24 months unopened |
| Storage |
-20°C sealed | 2–8°C reconstituted (2–4 weeks) |
| Manufacture |
In-house Fmoc SPPS — Qingdao, China |
| Brand |
Asia |
Certificate of Analysis (COA)
Frequently Asked Questions
How do I reconstitute this peptide?
Add 1–2mL bacteriostatic water to the lyophilized Melanotan vial. Swirl gently until dissolved to a clear, colourless solution. Both Melanotan I and Melanotan II dissolve readily.
How should this peptide be stored?
Store lyophilized at −20°C. Reconstituted: 2–8°C for up to 28 days. Protect from light — melanocortins are light-sensitive. Discard if solution changes colour or becomes cloudy.
What purity is this QSC compound and how is it verified?
QSC Melanotan I and Melanotan II are ≥99% HPLC pure with MS-confirmed cyclic peptide identity on every batch. COA is published on the product page and verifiable at verify.janoshik.com.
🧪 Peptide Research Tools: Use QSC's free
peptide calculators — reconstitution, BAC water, dosing, half-life, and mixing charts.
🌍 Domestic shipping: 🇺🇸 USA 5–7 days
🌏 International shipping: 7–14 days
⚠️ RESEARCH USE ONLY — NOT FOR HUMAN CONSUMPTION
QSC products are strictly for in vitro and in vivo laboratory research.
Safety & Handling
🚫
Not for Human Use
These compounds are for research only.
🥽
PPE Required
Always use appropriate protective equipment.
❄️
Storage Compliance
Follow product-specific storage conditions.
Product-Specific Storage
-20°C sealed | 2–8°C reconstituted (2–4 weeks)
