Fhoromethylene-rn-tyrosine (FMMT, MDL 72394) represents a prodrug approach to site-selective, irreversible inhibition of monoamine oxidase. A sensitive and specific method for the quantification of FMMT and its active metabolite (MDL 72392) in human plasma and urine has been developed for future pha
Development of a gas chromatographic/mass spectrometric method to quantify R(–)-apomorphine, R(–)-apocodeine and R(–)-norapomorphine in human plasma and urine
✍ Scribed by Frédéric Libert; François Coudoré; Damien Richard; Franck Durif; Alain Eschalier
- Publisher
- John Wiley and Sons
- Year
- 2005
- Tongue
- English
- Weight
- 119 KB
- Volume
- 40
- Category
- Article
- ISSN
- 1076-5174
- DOI
- 10.1002/jms.939
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✦ Synopsis
Abstract
A method was developed and validated for the analysis of R(−)‐apomorphine, (R−)‐apocodeine and R(−)‐norapomorphine in human plasma and urine with N‐propylnorapomorphine as internal standard using gas chromatography/mass spectrometry (GC/MS) and single‐ion monitoring after a single liquid–liquid extraction and silylation of compounds. The quantification limits were 1 ng/ml for apomorphine and apocodeine and 25 ng/ml for norapomorphine. Calibration curves were linear, within the range 1–100 ng/ml. Variation in intraday and interday precision was below 10%. This method was applied to study apomorphine bioavailability in nine patients with Parkinson's disease before and after coadministration of a catechol‐O‐methyl transferase inhibitor. Copyright © 2005 John Wiley & Sons, Ltd.
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