Derivatization for LC-Electrospray Ionization-MS: A Tool for Improving Reversed-Phase Separation and ESI Responses of Bases, Ribosides, and Intact Nucleotides
Precolumn derivatization and capillary liquid chromatographic/frit-fast atom bombardment mass spectrometric analysis of cytokinins inArabidopsis thaliana
New cytokinin derivatives with high surface activity were developed for capillary liquid chromatography/frit-fast atom bombardment (FAB) mass spectrometry. Propionyl ester derivatives of cytokinin nucleosides and glucosides and benzylamine derivatives of cytokinin bases gave stronger [M + H]+ ion currents than the underivatized compounds. In trace analysis by selective reaction monitoring, low (fmole)