Discovery of Quasi-Molecular Ions in Electrospray Spectra by Automated Searching for Simultaneous Adduct Mass Differences

Differentiation of a pair of diastereome

Differentiation of a pair of diastereomeric tertiarybutoxycarbonylprolylproline ethyl esters by collision-induced dissociation of sodium adduct ions in electrospray ionization mass spectrometry and evidence for chiral recognition by ab initio molecular orbital calculations

✍ Hideaki Tsunematsu; Hirohito Ikeda; Hiroshi Hanazono; Masanori Inagaki; Ryuichi 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 English ⚖ 388 KB 👁 1 views

## Abstract The fragmentation of the sodium adduct ions for __tert__‐butoxycarbonyl‐L‐prolyl‐L‐proline ethyl ester (Boc‐L‐Pro‐L‐Pro‐OEt) was compared with that for Boc‐D‐Pro‐L‐Pro‐OEt in positive‐ion electrospray ionization (ESI) mass spectrometry. In the collision‐induced dissociation (CID) mass s