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  • Title: Liquid chromatographic determination of total celiprolol or (S)-celiprolol and (R)-celiprolol simultaneously in human plasma.
    Author: Verbesselt R, Zugravu A, Tjandramaga TB, De Schepper PJ.
    Journal: J Chromatogr B Biomed Appl; 1996 Aug 30; 683(2):231-6. PubMed ID: 8891920.
    Abstract:
    A method has been developed for the determination of total celiprolol (sum of enantiomers) or the enantiomers (R)-celiprolol and (S)-celiprolol in plasma by high-performance liquid chromatography with UV and fluorescence detection. After extraction from alkalinized plasma with methyl-tert.-butyl ether and back-extraction into 0.01 M HCl (for total celiprolol determination) or after evaporation of the organic phase and derivatisation with R(-)-1-(1-naphthyl)ethyl isocyanate (enantiomer determination), total celiprolol or its diastereomeric derivatives were chromatographed on a reversed-phase HPLC column with a mixture of acetonitrile and phosphate buffer pH 3.5 (+0.05% triethylamine). Acebutolol was used as internal standard. Linearity was obtained in the range of 5 to 2000 ng/ml for total and 2.5 to 500 ng/ml for enantiomer determination. Intra-day and inter-day variation was lower than 10%. The method can be applied for analysis of plasma samples obtained from patients treated with oral racemic celiprolol doses.
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