How to Store Research Peptides

Peptide degradation is driven by water, oxygen, light, heat and repeated temperature cycling. Storage practice is simply the business of limiting all five.

Lyophilised material

• Keep vials sealed in the original protective packaging until use.
• Store cold and dark, following the condition printed on the vial label.
• Allow the vial to reach room temperature before opening to prevent condensation.
• Keep desiccant in the storage container where the documentation calls for it.

Reconstituted solutions

Once in solution, hydrolysis and oxidation start. Solutions are stored refrigerated for short holds and frozen in single-use aliquots for longer ones. Each freeze–thaw cycle costs material, so plan aliquot volumes around how you actually work, not around the vial size.

Sequences that need extra care

Sequences containing cysteine, methionine or tryptophan are prone to oxidation; those containing asparagine or glutamine are prone to deamidation at higher pH. Where the documentation flags a sensitivity, reduce headspace and protect from light.

Shipping is not storage

Synedica ships lyophilised material in protective, tamper-evident packaging rather than refrigerated boxes — dry peptides tolerate transit at ambient temperature, and protection against crushing and light matters more over a short journey. Put material into its proper storage condition on arrival, not at the end of the day.

Keep a log

Record compound, batch number, arrival date, reconstitution date, diluent and concentration. When a result looks unusual months later, the log is what tells you whether the material or the method changed.