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Storage Recommendations

Proper storage of a peptide can prevent bacterial degradation, secondary structure formation, oxidation, and other potential degradation for several years.

Peptides are most stable in their lyophilized form at -20° C or colder in a sealed container containing desiccant.  If peptide must be stored in solution, ensure pH is in the 3-6 range and then aliquot peptide into usable sizes to prevent damage from multiple freeze/thaw cycles.  Cysteine (C), methionine (M), tryptophan (W), asparagine (N), and glutamine (Q) are most sensitive to degradation in solution.

 

Duration

Time Period

Storage Recommendation

Long-Term Storage

3 months-5 years

Lyophilized powder, frozen and desiccated, -20° C or colder

Short-Term Storage

0-3 months

Frozen liquid (-20° C) or refrigerated lyophilized powder

 

 

Testimonials

"Over the past 8 years we have used NEP for synthesis of many hundreds of peptides. The quality of NEP’s product is consistently very high. The company is deeply knowledgeable in all aspects of peptide synthesis, highly collaborative, and keenly interested in meeting the changing needs of their customers with respect to scale and formatting for delivery of peptides. One example is their flash-purified product which meets the need for initial draft-level evaluation without breaking the bank. Our experience with NEP’s antibody production capabilities has also been very good..."
Steven Carr, PhD - Director of Proteomics, Broad Institute