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  • Title: Determination of gliclazide in serum by high-performance liquid chromatography using solid-phase extraction.
    Author: Noguchi H, Tomita N, Naruto S, Nakano S.
    Journal: J Chromatogr; 1992 Dec 02; 583(2):266-9. PubMed ID: 1478992.
    Abstract:
    A simple and sensitive high-performance liquid chromatographic method for a routine assay of gliclazide in serum is described. Serum samples spiked with glibenclamide (internal standard) were applied to Bond Elut C18 cartridges. After washing with phosphate buffer (pH 7.5) and water, the cartridge was eluted with 60% methanol. The eluate was evaporated to dryness. The residue was dissolved in methanol and injected onto an octadecyl silica column (5 microns, 150 mm x 4.6 mm I.D.). The mobile phase was 0.04 M potassium dihydrogenphosphate (pH 4.6)-acetonitrile-isopropyl alcohol (5:4:1, v/v). Ultraviolet detection at 227 nm was used. The minimum detectable level of gliclazide was 20 ng/ml.
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