What purity level are the peptides, and how is it verified?
All PureChain compounds are guaranteed 99%+ pure. Each batch is independently tested by Janoshik Analytical or Kovera Labs using HPLC and mass spectrometry. The Certificate of Analysis shows the exact purity percentage, molecular-weight verification and sequence confirmation for that specific lot.
What is a Certificate of Analysis, and how do I read it?
It is the lab document behind the claim. The sections that matter are purity (should be 99%+), identity (mass spec confirming the compound is what the label says), appearance, and endotoxin level. Every COA is batch-specific — one lot’s certificate says nothing about another, which is why we publish them per batch rather than once per product.
Who is eligible to order?
Credentialed researchers, certified laboratories and accredited scientific institutions. Purchasers must be at least 21. We do not accept personal or recreational orders under any circumstances.
How should I store the material?
Lyophilized peptides are stable. Under three months, room temperature in a cool dark place is fine. For longer, refrigerate at 2–8 °C or freeze at -20 °C. Avoid repeated freeze-thaw cycles — that does more damage than a few degrees of storage temperature.
Do you ship internationally?
No. We ship to all 50 US states and nothing beyond them. Research compounds crossing a border bring customs holds, import permits and seizure risk that neither of us can control, and we would rather not sell you something that gets stopped at the frontier. See the shipping policy for what we do cover.
What exactly are research peptides?
Synthetically produced compounds used in controlled scientific environments — preclinical studies, academic investigation, early-stage development. They are not intended for human or animal consumption.
How fast do orders ship?
Orders placed before 1 PM ET on a business day ship the same day, with free priority shipping and tracking on every order.
Can you advise on dosing or protocols?
No. We supply material and its lab documentation. We cannot advise on dosing, protocols or anything involving human use, and we will not answer questions framed that way.