Source comparison
Melanotan-2 Lyophilized Powder: Handling Comparison
Sealed Lyophilized Powder −20°C (freezer) 24–36 months 3–5% potency loss per month at room temp Non-negotiable—this is the only phase with multi-year stability Room Temp Equilibration (sealed) 20–25°C 20–30 minutes Minimal if vial remains sealed Required step
This comparison does not assign a generated winner or score.
- Sealed Lyophilized Powder
- −20°C (freezer)
- 24–36 months
- 3–5% potency loss per month at room temp
- Non-negotiable—this is the only phase with multi-year stability
- Room Temp Equilibration (sealed)
- 20–25°C
- 20–30 minutes
- Minimal if vial remains sealed
- Required step to prevent condensation during opening
- Reconstituted Solution
- 2–8°C (refrigerator)
- 28 days
- 8–15% loss per week at room temp; bacterial growth risk after 28 days
- The 28-day limit is bacteriostatic water's antimicrobial window, not peptide stability
- Transport/Travel (reconstituted)
- 2–8°C with cooling pack
- Up to 48 hours
- Potency loss begins after 4–6 hours above 8°C
- Purpose-built peptide coolers maintain range for 36–48 hours without refrigeration
- Frozen Storage (reconstituted, emergency only)
- −20°C
- Single freeze-thaw cycle tolerated
- 10–20% potency loss per freeze-thaw cycle
- Never freeze reconstituted peptides as standard practice—emergency preservation only