Is hydrolysis an analytical result on every COA?

No. This entry names a chemical risk of moisture. Record hydrolysis only if the lot file you opened reports it.

Does a dry cake prove the bonds are intact?

No. Dry appearance is not a mass result. Identity remains the comparison on the Certificate of Analysis.

Glossary · 2026-09-24

Peptide-bond hydrolysis, laboratory note

Hydrolysis is cleavage of a peptide bond by water. In a lyophilized solid, residual moisture is the practical concern: a wet cake can break the chain the sequence describes. That is a stability fact, not a preparation step. This page does not describe how to force or prevent cleavage at the bench beyond sealed storage.

Keep the vial closed and follow the Canadian storage guide. A hydrolyzed chain would not match the mass calculated for the intact sequence, which is why a damaged seal belongs in a quarantine note rather than in a study file. See peptide structure and stability. Research-use only.

Frequently asked questions

Is hydrolysis an analytical result on every COA?: No. This entry names a chemical risk of moisture. Record hydrolysis only if the lot file you opened reports it.
Does a dry cake prove the bonds are intact?: No. Dry appearance is not a mass result. Identity remains the comparison on the Certificate of Analysis.

Research-use only. BlueNex Labs does not provide medical or veterinary advice. Confirm your institution’s policies before purchase.