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Electrospray tandem mass spectrometry of epipolythiodioxopiperazines
Journal of Mass Spectrometry, 2007AbstractLow‐energy collision‐induced electrospray ionization tandem mass spectrometry ESI‐CID‐MS/MS (in the positive ion mode) was used for the structural characterization of a series of five representative epioplythiodioxopipreazines: dethiotetra(methylthio)chemotin, chaetocochins A, B and C, and chemotin isolated from the fungus Chaetomium cochliodes.
Zhi-Jun Wu +5 more
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Characterization of Polyphosphates by Electrospray Mass Spectrometry
Analytical Chemistry, 2000Electrospray ionization mass spectrometry (ESI-MS) was applied for the characterization of inorganic polyphosphates [orthophosphate, pyrophosphate, tripolyphosphate, trimetaphosphate, and tetrapolyphosphatel. The high selectivity of ESI-MS allows the detection of different polyphosphate species without preseparation by ion chromatography or capillary ...
David M. Hercules +2 more
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Electrospray ionization mass spectrometry of metalloporphyrins
Journal of Mass Spectrometry, 1998The magnesium, nickel, copper, zinc and vanadium metalloporphyrins from octaethylporphyrin, etioporphyrin I and tetraphenylporphyrin were characterized using electrospray ionization mass spectrometry (ESI-MS). The ion abundance of each of the porphyrins present in binary mixtures was monitored as a function of the porphyrin concentration and is ...
Patrick A. Limbach, Victor E. Vandell
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Electrospray mass spectrometry for protein characterization
Trends in Biochemical Sciences, 1995Mass spectrometry is a venerable analytical tool that has been used for some time in biochemistry for the analysis of small molecules, such as steroids. More recently, physicists have solved the problems associated with vaporizing and ionizing proteins and peptides, thereby allowing mass spectrometry to take on new roles in investigating protein ...
Matthias Mann, Matthias Wilm
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Electrospray tandem mass spectrometry of aminochromes
Rapid Communications in Mass Spectrometry, 2001AbstractThe catecholamines adrenaline, noradrenaline, dopamine, dopa and isoprenaline were oxidized into their respective aminochromes: adrenochrome, noradrenochrome, dopaminochrome, dopachrome and isoprenochrome. Tandem mass spectrometry (MS/MS) fragmentation patterns were examined for the five aminochromes in order to establish a general structural ...
Nuno Milhazes +7 more
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Multichannel Microchip Electrospray Mass Spectrometry
Analytical Chemistry, 1997Microfabricated multiple-channel glass chips were successfully interfaced to an electrospray ionization mass spectrometer (ESI-MS). The microchip device was fabricated by standard photolithographic, wet chemical etching, and thermal bonding procedures.
Yuriy M. Dunayevskiy +5 more
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Electrospray Tandem Mass Spectrometry of Nucleotides
Rapid Communications in Mass Spectrometry, 1996The tandem mass spectra (MS/MS) following electrospray ionization of nucleotides (from 2- to 6-mers) have been examined under a range of collision and ionization conditions. In general, abundant peaks due to the free bases and phosphate groups are observed, along with a limited number of sequence ions.
Margaret M. Sheil, Jacqueline Boschenok
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Identification of Sulfonylureas in Serum by Electrospray Mass Spectrometry
Analytical Biochemistry, 2000Identification of sulfonylureas in serum is important in the diagnosis of hypoglycemic crisis of unknown origin. Methods based on HPLC with UV or fluorescence detection may give false positive results. Mass spectrometry may successfully avoid this problem.
MAGNI, FULVIO +4 more
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Mass spectrometry using electrospray ionization
Nature Reviews Methods Primers, 2023G. R. D. Prabhu +3 more
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Linkage analysis in disaccharides by electrospray mass spectrometry
Carbohydrate Research, 1991Analysis of the structures of complex carbohydrates requires knowledge of the identity, anomeric configuration, and sequence of the sugar residues, and identification of the reducing terminus and the positions of the glycosidic linkages. Desorption-m.s. and f.a.b.-m.s.
GAROZZO D +4 more
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