If storage of peptides in solution is absolutely unavoidable, use sterile buffers at pH 5-6 and store

aliquots at -20℃ to prolong the storage life of peptides in solution.

It is not recommended to keep excess peptides in solution. The shelf life of peptides in solution 

is very limited,especially for sequences containing cysteine, methionine, tryptophan, asparagine, 

glutamine, and N-terminal glutamic acid. In general, aliquot the necessary amounts of peptide 

for a few days and relyophilize remaining portions for long term storage if necessary.

When preparing the peptide for use, please observe the following steps to maintain peptide 

quality: Warm up the peptide to room temperature prior to opening and weighing out portion 

of the peptide. The recommended time for warm up is 1 hour. In a clean environment weigh 

out desired quantity of peptide quickly. Store the remaining peptidein freezer, preferably 

below -20℃ within an enclosed case with dessicants.

Each peptide has its specific characteristics. If some problems happen during the synthesis and 

we cannot deliver your peptide on time, we will inform you as soon as possible.

All peptides will be shipped lyophilized in small microcentrifuge tubes (2 ml). Large amount of 

peptide may be aliquoted into several tubes. For every single peptide, data sheets will be 

provided that contains the key characteristics, such as amino acid sequence, modification, 

purity, mass spectrum data and HPLC data.

Our typical turn-around time is about 2-3 weeks. The turn-around time may vary depending on 

the peptide length and difficulty.