Glossary · 2026-09-24
By Alice Kay · Last reviewed 24 Sep 2026
C-terminal amidation, laboratory definition
Research-use notice: This article summarizes published scientific literature for educational purposes. It is not medical advice and does not provide dosing, administration or human-use information. Findings described in the literature do not apply to any BlueNex Labs product, which is supplied only for in-vitro laboratory research and not for human or animal use.
Amidation, in this glossary, means a C-terminal amide rather than a C-terminal carboxylic acid. The two ends are different species. An identity check has to use the form written on the report. Swapping acid and amide in the margin can make a calculated mass miss the observed ion even when the residue string is otherwise the same.
The C-terminus term names that end of the chain. The sequence term covers how residues are written. Neither term authorizes a receiver to edit a mass calculation. See the COA reading guide. Research use only.
Published lot files for this catalogue are indexed in the certificates library. This definition does not add a report, and it does not assign a task identifier. Research use only.
Frequently asked questions
- Does a product name prove the C-terminus is an amide?
- No. Use the species and the mass basis printed on the lot file. If the file is silent, do not choose a form.
- Is amidation a purity percentage?
- No. It describes a chemical end of the chain. Purity remains the chromatographic figure, when the report includes one.
Research use only. BlueNex Labs does not provide medical or veterinary advice. Confirm your institution’s policies before purchase. How a comparison or class note is checked sits on documentation standards. Articles are written and reviewed by Alice Kay, Ph.D.