COA Spec Checker
Paste the results from a certificate of analysis, set your limits, and see what passes, what fails and by how much. Also works out raw material for a batch at the reported purity.
Also available as a browser extension:
Tools for peptide buyers
Free calculators and checks we built for sourcing work. They run in your browser and don't need an account.
Net peptide content calculator
Estimates how many mg of actual peptide are in a vial once salt and water are taken out, and how much powder you need for a target amount.
FDA record lookup
Searches FDA warning letters and import alerts for a supplier or facility name, with a link to the EU GMP database.