title: The structure of the m/z 101 ion in the spectra of permethylated saccharides.
abstract: In this paper the structure of the most important fragment ion ([C5H9O2]+, m/z 101) in the spectra of permethylated saccharides is investigated. The participation of the C-1 carbon atom in the formation of this ion has been quantitatively determined from the spectra of 13C labelled permethylated glucofuranosides. Investigation of the metastable ion and collisional activation spectra of m/z 101 yielded evidence for an acylic ion structure.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D007477:Ions; D009682:Magnetic Resonance Spectroscopy; D013058:Mass Spectrometry / Q000379:methods*; D008745:Methylation; D009005:Monosaccharides / Q000032:analysis*
chemical_list: D007477:Ions; D009005:Monosaccharides