Source comparison
Melanotan-1 History: Structural vs Clinical Comparison
Amino Acid Length 13 (linear) 7 (cyclic) Linear structure preserves selectivity but reduces potency vs cyclic analogs Half-Life 30–40 minutes 2–5 minutes 120+ minutes Longer half-life reduces dosing frequency but doesn't eliminate it MC1R Binding Affinity 10×
This comparison does not assign a generated winner or score.
- Amino Acid Length
- 13 (linear)
- 7 (cyclic)
- Linear structure preserves selectivity but reduces potency vs cyclic analogs
- Half-Life
- 30–40 minutes
- 2–5 minutes
- 120+ minutes
- Longer half-life reduces dosing frequency but doesn't eliminate it
- MC1R Binding Affinity
- 10× native α-MSH
- Baseline (1×)
- 1000× native α-MSH
- Moderate affinity sufficient for melanogenesis; high affinity increases off-target risks
- Off-Target MC3R/MC4R Activity
- Minimal
- Significant
- Selectivity critical for pediatric EPP use and cardiovascular safety profiles
- Regulatory Status (2026)
- EMA/TGA approved (Scenesse) for EPP
- Not marketed
- Research-grade only
- Approved status reflects specific indication; broader use remains investigational
- Typical Pigmentation Onset
- 7–10 days
- N/A (impractical dosing)
- 3–5 days
- Slower onset acceptable when treating chronic photosensitivity vs cosmetic tanning