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A preliminary study of beta-cyclodextrin/metoprolol tartrate inclusion complex for potential enantiomeric separation
D M Radulovic1, K D Karljikovic-Rajic, B M Lucic
1Faculty of Pharmacy, Institute of Pharmaceutical Chemistry and Drug Analysis, University of Belgrade, Vojvode Stepe 450, 11221 Belgrade, Yugoslavia.
Abstract:
The inclusion complex formation between Metoprolol tartarata (MeT) and beta-cyclodextrin (beta-CD) has been investigated using hyperchromic shift at lambda(max) 274.4 nm of MeT. Different parameters such as stirring time, solvent composition (aqueous and aqueous/methanol solutions with methanol content up to 50%), pH values 4.0 and 8.0 were established for optimal inclusion complex formation and confirmed two stoichiometric compositions 1:1 and 1:2. Preliminary data on usage of MeT/beta-CD complex in reversed-phase HPLC indicate the potential application of this complex as a kind of pre-column derivatization for enantiomeric separation of beta(1)-blockers.