Chromatographic behavior of new deazapurine ribonucleosides in hydrophilic interaction liquid chromatography.
The chromatographic behavior of new biogenic purine nucleosides in hydrophilic interaction liquid chromatography was examined on three different stationary phases, namely bare silica, and amide- and cyclofructan-based stationary phases. The effects of buffer concentration, pH and acetonitrile-to-aqueous-part ratio in the mobile phase on retention and peak shape were assessed. The retention coefficients and peak symmetry values substantially differed with respect to analytes´ structures, stationary phase properties and mobile phase composition. The bare silica column was unsuitable for these compounds under the chromatographic conditions tested due to very broad and asymmetrical peaks. Furthermore, the cyclofructan-based stationary phase provided almost Gaussian peak shapes of all deazapurine nucleosides under most conditions tested. Therefore, the cyclofructan-based stationary phase is the most suitable choice for the chromatographic analysis of nucleosides.
['Kalíková|Květa|K|', 'Voborná|Markéta|M|', 'Tesařová|Eva|E|']
D002021:Buffers D002853:Chromatography, Liquid D005630:Fructans D006863:Hydrogen-Ion Concentration D057927:Hydrophobic and Hydrophilic Interactions D011684:Purine Nucleosides D012263:Ribonucleosides
Hydrophilic interaction liquid chromatography Retention Peak symmetry Deazapurine nucleosides Cyclofructan