How should research compounds be stored?

Lyophilised (freeze-dried) peptides are considerably more stable than reconstituted solution, which is why vials are shipped as powder rather than pre-mixed. Unopened and stored correctly, a lyophilised vial holds its integrity far longer than the same compound in solution.

As a general rule for laboratory peptide handling: keep vials and pens refrigerated once received, protect them from direct light, and avoid repeated temperature cycling. Once a vial is reconstituted for research use, treat it as a time-limited, single-protocol quantity rather than long-term storage.

This is general handling guidance, not instructions specific to any one compound's stability data. If your protocol requires documented stability parameters, request the certificate of analysis for your batch.