Research & Laboratory Basics
Laboratory Storage & Stability
How temperature, light, and moisture affect research compounds — and the storage practices that protect them.
6 min read
The enemies of stability
Four factors drive peptide degradation: heat, moisture, light, and oxygen. Effective storage is simply the systematic control of all four.
Heat accelerates every degradation reaction. Moisture enables hydrolysis. Light drives photochemical breakdown in sensitive sequences. Oxygen oxidizes susceptible amino acid residues.
Storing lyophilized compounds
Lyophilized peptides are best stored frozen at −20°C or below, sealed against moisture, and protected from light. Under these conditions, most remain stable for extended periods.
When retrieving a vial from frozen storage, let it equilibrate to room temperature before opening. Opening a cold vial invites atmospheric moisture to condense on the powder.
Storing reconstituted solutions
Once in solution, storage requirements tighten. Refrigeration at 2–8°C is appropriate for short-term work; for longer storage, solutions should be divided into single-use aliquots and frozen to avoid repeated freeze-thaw cycles, which stress the compound.
Always label aliquots with the compound, concentration, solvent, and date. Good storage practice is good documentation practice.
Research Use Only. This page is provided for scientific and educational purposes only. It is not medical advice, does not describe any approved therapy, and provides no dosing, administration, or treatment instructions for human use. SFVLAB products are not intended to diagnose, treat, cure, or prevent any disease and are not for human or veterinary use.
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- What Are Research Peptides? — Getting Started
- Understanding Research-Use-Only Products — Getting Started
- Research Peptide Terminology — Getting Started