Applications of the Ion-Pair Concept to Hydrophilic Substances with Special Emphasis on Peptides
- 1 January 1997
- journal article
- review article
- Published by Springer Nature in Pharmaceutical Research
- Vol. 14 (2) , 119-127
- https://doi.org/10.1023/a:1012076022420
Abstract
Previous investigations have shown that ionic drugs with high aqueous solubilities can be lipophilized by ion-pair formation, with appropriate counter-ions. This type of association may prove promising for several biopharmaceutical, analytical and technological applications. This review examines the ion-pair concept with special emphasis on its application to peptides. The conditions for ion-pair formation of different molecules, as well as their transfer to organic solvents, are described. The use of ion-pairs to increase the permeation of various therapeutic agents, including peptidic drugs, is also discussed. Recent uses of ion-pairs in micro- and nanoencapsulation of peptides are also commented upon.Keywords
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