FAQs

Unless otherwise noted on the product's Certificate of Analysis, lyophilized (freeze-dried) peptides should be stored at -20°C for long-term stability and are generally stable at 2-8°C for shorter periods. Once reconstituted in a laboratory setting, solutions should be kept refrigerated and used within the timeframe indicated by your own stability testing or standard peptide-handling protocols. Avoid repeated freeze-thaw cycles and direct light exposure, which can degrade peptide integrity.

Each COA lists the batch number (a unique identifier for that production lot), the measured purity percentage (typically via HPLC), the analytical test method used, the date testing was completed, and the name of the testing laboratory. You can look up the COA for any product on our /coa page by selecting the product from the dropdown. Always cross-reference the batch number on your product's label with the batch number on the COA before use in your research protocol.

No — an account isn't required. You can view the full catalog, pricing, and Certificates of Analysis, and complete your order as a guest. Before entering the store you'll be asked to confirm you are 21 or older, and by completing checkout you agree to our Terms and Conditions, which include that all products are supplied strictly for laboratory research use. Creating an account is optional and simply lets you track orders and reorder more quickly.

We currently ship only within the United States, including Guam and the Northern Mariana Islands. We do not offer international shipping. 

Purchasers are responsible for ensuring compliance with all applicable local regulations regarding the receipt and use of research materials.