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  • Title: High-performance liquid chromatography-electrospray ionization mass spectrometry determination of mitiglinide in human plasma and its pharmacokinetics.
    Author: Liang J, Tian Y, Zhang Z, Feng S, Zhao Y, Mao G.
    Journal: J Mass Spectrom; 2007 Feb; 42(2):171-7. PubMed ID: 17173338.
    Abstract:
    A selective and sensitive method employing high-performance liquid chromatography-electrospray ionization mass spectrometry was developed and validated for the determination of mitiglinide in human plasma.With gliclazide as the internal standard, mitiglinide was extracted from plasma with n-hexane: = 80 : 20 (v/v). The organic layer was evaporated and the residue was redissolved in methanol: water (10 mM CH3COONH4, pH = 3.0) = 65 : 35 (v/v). An aliquot of 10 microl was chromatographically analyzed on a prepacked Shimadzu VP-ODS (5 microm, 150 x 2.0 mm i.d.) using the mobile phase comprising methanol: water (10 mM CH3COONH4) = 65 : 35 (v/v) by means of selected-ion monitoring mode mass spectrometry. Standard curves were linear (r2 = 0.9972) over the concentration range of 2.84-11 300 pmol/ml and had good accuracy and precision. The within- and between-batch precisions of the method were within 15% of standard deviation. The lower limit of detection was 1.42 pmol/ml. The validated HPLC/ESI-MS method has been successfully applied in the pharmacokinetics of mitiglinide in 12 healthy Chinese volunteers.
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