We're here to help

Every compound is manufactured to a 99%+ identity-purity target and confirmed by reversed-phase HPLC with mass-spectrometry identity confirmation. Each lot is tested by an independent third-party laboratory, and where a lot's certificate has been published it appears on that product's page.

Purity and identity are run on every lot: reversed-phase HPLC measures identity purity against the 99%+ specification, and mass spectrometry confirms the molecular weight matches the declared sequence. Both are performed by an independent analytical laboratory on equipment we don't own, so the figures aren't self-reported. Safety testing runs periodically, per batch rather than on every lot — heavy metals by ICP-MS, microbial counts (TAMC/TYMC), and bacterial endotoxin under USP <85>, reported in EU/vial. Every measured value, including labeled versus actual mass, is recorded on that lot's Certificate of Analysis.

A Certificate of Analysis (CoA) is the lab report for a specific lot. It lists the measured purity, the identity confirmation, net peptide content, and — for batches that have been safety-tested — screens for heavy metals, sterility, and endotoxin. On the product page you'll find the labeled versus measured mass, the purity figure, and the month that batch was tested.

Keep unopened lyophilized vials at -20°C, protected from light, where most compounds remain stable for two or more years. Once reconstituted, store at 2–8°C and use within the window noted on each product page. Storage guidance specific to each compound is listed under its stability section.