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Updated: Aug 13, 2026

Determination of the Gas-phase Acidities of Oligopeptides
Published on: June 24, 2013
Determination of enantiomers in a synthetic argininal peptide using capillary zone electrophoresis and
1Department of Analytical Development, Schering-Plough Research Institute, Kenilworth, NJ 07033, USA. niya.dan@spcorp.com
Abstract:
SCH 201781 is a synthetic argininal peptide containing two chiral centers and an aromatic sulfonamide group. It can exist as four reversible forms, the aldehyde, the hydrate, and two diastereomeric aminals. Capillary zone electrophoresis (CZE) and reversed-phase high-performance liquid chromatographic (HPLC) methods were developed to separate and quantitate the enantiomers in SCH 201781. Comparable results were obtained using both methods. The CZE method uses direct injection, while the HPLC method requires a precolumn derivatization and is more time consuming. The CZE method provides superior sensitivity to the HPLC method. Both methods were shown to be precise and reproducible.
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