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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

"I had been working with a different peptide company for custom peptides…but ran into a spate of problems – lost orders, huge delays, and bad technical help. So we switched to NEP. After that, everything has gone swimmingly. Pricing, honestly, is a bit more than I was paying before, but as with many other things in life, you get what you pay for!"
Kirk F. PhD