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The values of the apparent binding constants for β‐cyclodextrin complexes of betulin derivatives determined by mobility shift affinity capillary electrophoresis were found to be independent of the composition of the two background electrolytes used (tetraborate buffer, pH 9.18, and phosphate buffer, pH 8.00, both of them with 20 mM ionic strength). It has been found that if there is not a constant...
In this article, capillary electrophoresis was used to measure the effective electrophoretic mobility of ester betulin derivatives as a pH function and to study their complexation with γ‐cyclodextrin (γ‐CD). The electrophoretic mobility of betulin 3,28‐diphthalate (DPhB) and 3,28‐disuccinate (DScB) changed unusually with decreasing pH: instead of decreasing, it first increased and then decreased....
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