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Separation of profen enantiomers by capillary electrophoresis using cyclodextrins as chiral selectors. 1998

M Blanco, and J Coello, and H Iturriaga, and S Maspoch, and C Pérez-Maseda
Departament de Química, Unitat de Química Analítica, Facultat de Ciències, Universitat Autònoma de Barcelona, Spain.

A method for resolving the enantiomers of various 2-arylpropionic acids (viz. ketoprofen, ibuprofen and fenoprofen) by capillary zone electrophoresis (CZE) using a background electrolyte (BGE) containing a cyclodextrin as chiral selector is proposed. The effects of the type of cyclodextrin used and its concentration on resolution were studied and heptakis-2,3,6-tri- O-methyl-beta-cyclodextrin was found to be the sole effective choice for the quantitative enantiomeric resolution of all the compounds tested. The influence of pH, BGE concentration, capillary temperature and addition of methanol to the BGE on resolution and other separation-related parameters was also studied. The three compounds studied can be enantiomerically resolved with a high efficiency in a short time (less than 20 min) with no capillary treatment. This makes the proposed method suitable for assessing the enantiomeric purity of commercially available pharmaceuticals.

UI MeSH Term Description Entries
D007052 Ibuprofen A non-steroidal anti-inflammatory agent with analgesic, antipyretic, and anti-inflammatory properties Advil,Benzeneacetic Acid, alpha-methyl-4-(2-methylpropyl)- trimethylsilyl ester,Brufen,Ibumetin,Ibuprofen, (+-)-Isomer,Ibuprofen, (R)-Isomer,Ibuprofen, (S)-Isomer,Ibuprofen, Aluminum Salt,Ibuprofen, Calcium Salt,Ibuprofen, Copper (2+) Salt,Ibuprofen, Magnesium Salt,Ibuprofen, Potassium Salt,Ibuprofen, Sodium Salt,Ibuprofen, Zinc Salt,Ibuprofen-Zinc,Motrin,Nuprin,Rufen,Salprofen,Trauma-Dolgit Gel,alpha-Methyl-4-(2-methylpropyl)benzeneacetic Acid,Ibuprofen Zinc,Trauma Dolgit Gel
D007660 Ketoprofen An IBUPROFEN-type anti-inflammatory analgesic and antipyretic. It is used in the treatment of rheumatoid arthritis and osteoarthritis. Benzoylhydratropic Acid,19,583 RP,2-(3-Benzoylphenyl)propionic Acid,Alrheumat,Alrheumum,Orudis,Profenid,RP-19583,RP 19583,RP, 19,583,RP19583
D009994 Osmolar Concentration The concentration of osmotically active particles in solution expressed in terms of osmoles of solute per liter of solution. Osmolality is expressed in terms of osmoles of solute per kilogram of solvent. Ionic Strength,Osmolality,Osmolarity,Concentration, Osmolar,Concentrations, Osmolar,Ionic Strengths,Osmolalities,Osmolar Concentrations,Osmolarities,Strength, Ionic,Strengths, Ionic
D010666 Phenylpropionates Derivatives of 3-phenylpropionic acid, including its salts and esters.
D003505 Cyclodextrins A homologous group of cyclic GLUCANS consisting of alpha-1,4 bound glucose units obtained by the action of cyclodextrin glucanotransferase on starch or similar substrates. The enzyme is produced by certain species of Bacillus. Cyclodextrins form inclusion complexes with a wide variety of substances. Cycloamylose,Cyclodextrin,Cyclodextrin Derivatives,Cyclomaltooligosaccharides,Derivatives, Cyclodextrin
D005279 Fenoprofen A propionic acid derivative that is used as a non-steroidal anti-inflammatory agent. Fenoprofen Calcium,Fenoprofen Dihydrate, Calcium Salt,Fenoprofen, Anhydrous, Calcium Salt,Nalfon,Nalgesic
D006863 Hydrogen-Ion Concentration The normality of a solution with respect to HYDROGEN ions; H+. It is related to acidity measurements in most cases by pH pH,Concentration, Hydrogen-Ion,Concentrations, Hydrogen-Ion,Hydrogen Ion Concentration,Hydrogen-Ion Concentrations
D000432 Methanol A colorless, flammable liquid used in the manufacture of FORMALDEHYDE and ACETIC ACID, in chemical synthesis, antifreeze, and as a solvent. Ingestion of methanol is toxic and may cause blindness. Alcohol, Methyl,Carbinol,Sodium Methoxide,Wood Alcohol,Alcohol, Wood,Methoxide, Sodium,Methyl Alcohol
D013237 Stereoisomerism The phenomenon whereby compounds whose molecules have the same number and kind of atoms and the same atomic arrangement, but differ in their spatial relationships. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 5th ed) Molecular Stereochemistry,Stereoisomers,Stereochemistry, Molecular,Stereoisomer
D013696 Temperature The property of objects that determines the direction of heat flow when they are placed in direct thermal contact. The temperature is the energy of microscopic motions (vibrational and translational) of the particles of atoms. Temperatures

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