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Document set current to 30 July 2026
Defined term · Analytical chemistry

Deletion sequence

An impurity lacking one or more residues, arising from incomplete coupling during synthesis. Often close-eluting and detectable only by mass spectrometry.

Document identifier
CEI-GT-149
Series
Defined term
Version
1.0
Published
30 Jul 2026
Last reviewed
30 Jul 2026
Certainty
Not rated

§1Deletion sequence

§1.2Category

Analytical chemistry — Terms describing the determination of identity, purity, content and quality.

§1.3Related terms

  • Related substances — Impurities structurally related to the target peptide, arising from synthesis or degradation. Reported by name and retention time on a complete certificate and as a…
Compound Evidence Institute · CEI-GT-149 · https://compoundevidence.com/glossary/deletion-sequence/ · retrieved 30 July 2026
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