ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Determination of Linkage Position in Per-O-methylated Xylooligosaccharides by MIKE and CID Mass Spectra of Ammonia and Methylamine Cluster Ions

V. Kováčik, J. Hirsch, and V. Pätoprsty

Institute of Chemistry, Slovak Academy of Sciences, SK-842 38 Bratislava

Abstract: The linkage types 1→2, 1→3, and 1→4 of D-xylobioses can be distinguished based on the unimolecular decomposition spectra (MIKE) of the cluster [M + NH₄]⁺ ions or by collision-induced dissociation (CID) mass spectra of [M + CH₃NH₃]⁺ ions of per-O-methylated compounds. The MIKE spectra of [M + NH₄]⁺ and [M + CH₃NH₃]⁺ adducts allow the determination of linkage positions between the xylose residues in per-O-methylated o-xylotrioses. The branching point of the branched trisaccharides can be deduced from these mass spectra, too.

Full paper in Portable Document Format: 486a422.pdf

Chemical Papers 48 (6) 422–425 (1994)