PMID- 21268245 OWN - NLM STAT- MEDLINE DCOM- 20110420 LR - 20191210 IS - 1615-9314 (Electronic) IS - 1615-9306 (Linking) VI - 34 IP - 3 DP - 2011 Feb TI - High-performance liquid chromatographic determination of memantine hydrochloride in rat plasma using sensitive fluorometric derivatization. PG - 241-6 LID - 10.1002/jssc.201000579 [doi] AB - In this study, we investigated a simple, sensitive and reliable liquid chromatography-fluorescence detection method for the determination of memantine hydrochloride in rat plasma which was based on derivatization with 9-fluorenylmethyl chloroformate (FMOC-Cl). For the first time, FMOC-Cl was introduced into derivatization of memantine hydrochloride in rat plasma. The amino groups of memantine hydrochloride and amantadine hydrochloride (internal standard) were trapped with FMOC-Cl to form memantine hydrochloride-FMOC-Cl and amantadine hydrochloride-FMOC-Cl compositions, which can be very compatible for LC-FLD. Precipitation of plasma proteins by acetonitrile was followed by vortex mixing and centrifugation. Chromatographic separation was performed on a C(18) column (DIAMONSIL 150 x 4.6 mm, id 5 mum) with a mobile phase consisting of acetonitrile and water at a flow rate of 1.0 mL/min. The retention times of memantine hydrochloride-FMOC-Cl and amantadine hydrochloride-FMOC-Cl compositions were 23.69 and 40.27 min, respectively. Optimal conditions for the derivatization of memantine hydrochloride were also described. The limit of quantification (LOQ) was 25 ng/mL for memantine hydrochloride in plasma, the linear range was 0.025-5.0 mug/mL in plasma with a correlation coefficient (r) of 0.9999. The relative standard deviations (RSDs) of intra-day and inter-day assays were 4.46-12.19 and 5.23-11.50%, respectively. The validated method was successfully applied to the determination of memantine hydrochloride in rat plasma samples. CI - Copyright (c) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. FAU - Xie, Mei-Fen AU - Xie MF AD - Department of Pharmaceutical Analysis, School of Pharmacy, Fudan University, Shanghai, PR China. FAU - Zhou, Wei AU - Zhou W FAU - Tong, Xin-Yi AU - Tong XY FAU - Chen, Yi-Le AU - Chen YL FAU - Cai, Yi AU - Cai Y FAU - Li, Yan AU - Li Y FAU - Duan, Geng-Li AU - Duan GL LA - eng PT - Evaluation Study PT - Journal Article DEP - 20110107 PL - Germany TA - J Sep Sci JT - Journal of separation science JID - 101088554 RN - 0 (Dopamine Agents) RN - 0 (Fluorenes) RN - 9PLB0BTT90 (1-(9-fluorenyl)methyl chloroformate) RN - W8O17SJF3T (Memantine) SB - IM MH - Alzheimer Disease/blood MH - Animals MH - Chromatography, High Pressure Liquid/*methods MH - Dopamine Agents/*blood/chemistry MH - Fluorenes/chemistry MH - Humans MH - Memantine/*blood/chemistry MH - Rats MH - Rats, Wistar EDAT- 2011/01/27 06:00 MHDA- 2011/04/22 06:00 CRDT- 2011/01/27 06:00 PHST- 2010/08/02 00:00 [received] PHST- 2010/11/10 00:00 [revised] PHST- 2010/11/10 00:00 [accepted] PHST- 2011/01/27 06:00 [entrez] PHST- 2011/01/27 06:00 [pubmed] PHST- 2011/04/22 06:00 [medline] AID - 10.1002/jssc.201000579 [doi] PST - ppublish SO - J Sep Sci. 2011 Feb;34(3):241-6. doi: 10.1002/jssc.201000579. Epub 2011 Jan 7.