Photoionization of pyrenemethylamine-labeled oligosaccharides: a new MALDI-TOF precursor ion-type for efficient fragmentation
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Oligosaccharides were covalently labeled with 1-pyrenemethylamine (1-PMA) in 15 min at 75 °C with high yield, separated by quantitative HPLC in less than 20 min, and characterized by off-line Matrix-Assisted Laser Desorption/Ionization (MALDI) Time-of-Flight ... ...
