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Recent studies on the electrospray ionisation mass spectrometric behaviour of selected nitrogen-containing drug molecules and its application to drug analysis using liquid chromatography-electrospray ionisation mass spectrometry


Recent studies on the electrospray ionisation mass spectrometric behaviour of selected nitrogen-containing drug molecules and its application to drug analysis using liquid chromatography-electrospray ionisation mass spectrometry



Journal of Chromatography. B Analytical Technologies in the Biomedical and Life Sciences 824(1-2): 1-20



ISSN/ISBN: 1570-0232

PMID: 16095984

DOI: 10.1016/j.jchromb.2005.07.018

This review presents recent studies on the electrospray ionisation mass spectrometry (ESI-MS) of selected N-containing drug molecules, their metabolites, formulation degradation products and process impurities taken from both studies in the author's laboratory and the recent literature using the Web of Knowledge database. Molecules of mass less than 500 Da are chosen according to selected structural classes in which they give ESI signals primarily in the positive ion mode as [M+H]+ ions. The structural classes are drugs with amine-containing side chains, drugs with N-containing saturated ring structures, drugs with N-containing unsaturated ring structures and quaternary ammonium drugs. Details are given on the fragmentations, where available, that these ionic species exhibit in-source and in ion-trap, triple quadrupole and time-of flight mass spectrometers. Fragmentation data, again where available, using electron impact mass spectrometry (EI-MS) is included for comparison. A review of applications for the period 2004-2005, again taken from the Web of Knowledge database, of the technique liquid chromatography-electrospray ionisation mass spectrometry (LC-ESI-MS) to the detection and determination of these N-containing drug molecules in biomatrices, pharmaceutical formulations, etc., is then made. Analytical information on, for example, sample concentration techniques, LC separation conditions, recoveries from biological media, degradation products and limits of detection (LODs) are provided. Comparisons, where available, are also made with rival analytical techniques such as gas liquid chromatography-mass spectrometry (GLC-MS), capillary electrophoresis-electrospray ionisation mass spectrometry (CE-ESI-MS) and stripping voltammetry (SV).

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Accession: 012487390

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