The dansylated enantiomers of several amino acids were separated using
hydroxypropyl-beta-cyclodextrin (HPBCD) at both pH 2.75 and 6.0. The
derivatives of the phenylalanine enantiomers showed unusual behaviour
at pH 2.75 in that the mobility difference reached a plateau value whi
ch did not decrease at high concentration. This behaviour was ascribed
to differences in the limiting mobilities of the two enantiomer-HPBCD
complexes.