Abstract
A sensitive and selective liquid chromatography–tandem mass spectrometry method for the determination of memantine was developed and validated over the linearity range 0.1–25 ng mL−1 with 0.5 mL of plasma using procainamide as the internal standard. This analysis was carried out on a Cosmosil 5C18-MS column and the mobile phase was composed of methanol: 0.5% formic acid (50:50, v/v). Detection was performed on a triple–quadrupole tandem mass spectrometer using positive ion mode electrospray ionization and quantification was performed by multiple reaction monitoring mode. The MS–MS ion transitions monitored were m/z 180 → 107 and 236 → 163 for memantine and procainamide, respectively. The between- and within-day precision was less than 10.9% and accuracy was less than 2.5%. The lower limit of quantification (LLOQ) was 0.1 ng mL−1. The method proved to be accurate and specific, and was applied to the pharmacokinetic study of memantine in healthy Chinese volunteers.
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Pan, RN., Chian, TY., Kuo, B.PC. et al. Determination of Memantine in Human Plasma by LC–MS–MS: Application to a Pharmacokinetic Study. Chroma 70, 783–788 (2009). https://doi.org/10.1365/s10337-009-1231-8
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DOI: https://doi.org/10.1365/s10337-009-1231-8