betadex and triethylammonium-cation

Three β-cyclodextrin-based chiral stationary phases were developed applying novel bonding chemistry. The separation performances of β-cyclodextrin, (R,S)-2-hydroxypropyl-β-cyclodextrin, and permethyl-β-cyclodextrin-based CSPs were compared in the resolution of structurally divergent analytes, such as coumarins, dansyl amino acids, and propionic acid derivatives. Separations were carried out in reversed phase mode applying 0.1% triethylammonium phosphate (pH 3.5)/MeOH mobile phase systems in different compositions. Of the three novel CSPs the permethyl-β-cyclodextrin bonded phase proved to be the most effective one for the enantioseparation of investigated analytes.

Topics: 2-Hydroxypropyl-beta-cyclodextrin; beta-Cyclodextrins; Buffers; Chromatography, High Pressure Liquid; Chromatography, Reverse-Phase; Coumarins; Cyclodextrins; Dansyl Compounds; Humans; Hydrogen-Ion Concentration; Isomerism; Methanol; Molecular Structure; Propionates; Quaternary Ammonium Compounds; Solvents