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Three new chiral stationary phases, 2,6-di-O-heptyl-3-O-trimethylsilyl-β-cyclodextrin(DHTBCD), 2,6-di-O-pentyl-3-O-trimethylsilyl-β-cyclodextrin (DPTBCD) and 2,6-di-O-butyl-3-O-trimethylsilyl-β-cyclodextrin (DBTBCD), were synthesized. Chromatographic prop