PepTools
Shelf-Life Reference
Reference guide for typical shelf life of lyophilized and reconstituted research compounds.
| Form | Storage Condition | General Guidance | Notes |
|---|---|---|---|
| Lyophilized powder | −20°C / −4°F or colder; protected from light and moisture | Preferred for long-term storage | Many lyophilized peptides may remain stable for months or years when properly sealed, but no universal shelf life applies. Follow the labeled expiration date or compound-specific stability data. |
| Lyophilized powder | 2–8°C / 36–46°F, refrigerated | May be suitable for shorter-term storage | Suitability varies considerably by peptide and formulation. Keep sealed and dry; allow the vial to reach room temperature before opening to reduce condensation. |
| Lyophilized powder | Controlled room temperature | Only when specifically permitted | Some formulated products tolerate room temperature, while other peptides degrade more rapidly. Follow the manufacturer’s documented conditions. |
| Reconstituted solution | 2–8°C / 36–46°F, refrigerated | Use within the product-specific beyond-use period | Stability may range from hours to weeks. The diluent, preservative, concentration, pH, sterility, and container all affect the usable period. |
| Reconstituted solution | Frozen | Only when validated for that compound | Aliquot before freezing and avoid repeated freeze–thaw cycles. Some peptides should not be frozen after reconstitution. |
| Reconstituted solution | Room temperature | Minimize exposure; use only as directed | Do not assign a universal number of hours. Discard according to product-specific instructions if left outside its validated temperature range. |
Sources
- 1.Bachem — Handling and Storage Guidelines for Peptides
- 2.MilliporeSigma — Handling and Storage Guidelines for Peptides and Proteins
- 3.GenScript — Peptide Storage and Handling Guidelines
- 4.FDA — Lyophilization of Parenteral Products
- 5.USP General Chapter <797> — Sterile Compounding Standards
- 6.Peer-reviewed review — Instability Challenges and Stabilization Strategies of Pharmaceutical Proteins and Peptides
Storage periods are general handling guidance, not guaranteed expiration dates. Actual stability depends on the peptide sequence, formulation, diluent, concentration, container, sterility, temperature history, and handling. Always follow the product label, manufacturer documentation, pharmacy-assigned beyond-use date, or compound-specific stability data.
Research Use Notice: These tools are provided for laboratory research purposes only. All calculations should be independently verified. Nothing on this site constitutes medical advice or instructions for human use.