Mass spectrometry carbohydrate analysis 22 article 20 unclassified drug 16 Oligosaccharides 14 Carbohydrates 12 Ionization 12 Polysaccharides 12 Spectrometry, Mass, Electrospray Ionization 12 controlled study 12 matrix assisted laser desorption ionization time of flight mass spectrometry 12 oligosaccharide 12 Desorption 10 Spectrometry, Mass, Matrix-Assisted Laser Desorption-Ionization 10 nonhuman 10 priority journal 10 Carbohydrate Sequence 8 Electrospray ionization 8 Electrospray ionization mass spectrometry 8 Mass spectrometers 8 Molecular Sequence Data 8 Particle detectors 8 anion exchange chromatography 8 electrospray mass spectrometry 8 Acids 6 Amines 6 Cyano-4-hydroxycinnamic acids 6 Harmane 6 Matrix assisted laser desorption/ionization 6 Spectrophotometry, Ultraviolet 6