Oxidation Risk
Met (M)Cys (C)Trp (W)
These amino acid residues are particularly sensitive to oxygen. For lyophilized powders, maintaining an airtight seal and minimizing air exposure are critical.
Knowledge Base: Storage
Ensuring
Peptide Stability
Lyophilized powder and solutions require different protocols. This page consolidates temperature parameters, degradation risks, and handling guidelines into a single matrix for reliable laboratory workflows.
Environmental Matrix
Select the state and temperature. The system will display expected stability and key risks.
Substance phase
Temperature
Half-lifeOptimal
1-2 years
Standard laboratory protocol: low temperatures and a moisture-free environment radically decelerate the hydrolysis of the polypeptide chain.
Chemical
Vulnerabilities
The amino acid sequence dictates the sample's behavior under real laboratory conditions. The matrix below outlines where stability is most commonly compromised.
Hygroscopicity
AspGluLysArg
Hydrophilic regions readily absorb moisture. Opening a cold vial in a warm environment creates condensation and triggers degradation.
Essential Guidelines
Handling cards
Thermal Balance
Acclimatization
After removal from the freezer, keep the sealed vial at room temperature for 30-45 minutes before opening.
0.9% Agent
BAC Water
Use bacteriostatic water for reconstitution. Standard sterile water significantly reduces the solution's shelf life.
Do Not Shake
Mechanical Stress
Introduce the solvent down the inner wall of the vial and mix gently by swirling. Vigorous shaking damages peptide bonds.
UV Protection
Photodegradation
Light and UV radiation accelerate molecular breakdown. Store samples in opaque packaging and avoid direct exposure to light.