Journal
JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
Volume 40, Issue 5, Pages 1202-1208Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jpba.2005.09.024
Keywords
ropinirole; LC-MS/MS
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A rapid and robust liquid chromatography-mass spectrometry (LC-MS/MS) method was developed for non-ergoline dopamine D-2-receptor agonist, ropinirole in human plasma using Es-citalopram oxalate as an internal standard. The method involves solid phase extraction from plasma, reversed-phase simple isocratic chromatographic conditions and mass spectrometric detection that enables a detection limit at picogram, levels. The proposed method was validated with linear range of 20-1200 pg/ml. The extraction recoveries for ropinirole and internal standard were 90.45 and 65.42%, respectively. The R.S.D.% of intra-day and inter-day assay was lower than 15%. For its sensitivity and reliability, the proposed method is particularly suitable for pharmacokinetic studies. (c) 2005 Elsevier B.V. All rights reserved.
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