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Ionization and fragmentation of monochloro-isomers of 3-hydroxy-2-phenyl-4(1H)-quinolinone
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SYSNO ASEP 0313782 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Ionization and fragmentation of monochloro-isomers of 3-hydroxy-2-phenyl-4(1H)-quinolinone Title Ionizace a fragmentace monochlor izomerů 3-hydroxy-2-fenyl-4(1H)-chimolinonů Author(s) Grepl, M. (CZ)
Roithová, J. (CZ)
Hradil, P. (CZ)
Lemr, Karel (MBU-M) RID, ORCIDSource Title Rapid Communications in Mass Spectrometry. - : Wiley - ISSN 0951-4198
Roč. 22, č. 18 (2008), s. 2905-2914Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords ionization ; mass spectromectry ; dft Subject RIV CB - Analytical Chemistry, Separation R&D Projects LC07017 GA MŠMT - Ministry of Education, Youth and Sports (MEYS) KJB400550704 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z50200510 - MBU-M (2005-2011) UT WOS 000259738700019 DOI https://doi.org/10.1002/rcm.3690 Annotation Electron ionization (EI), methane chemical ionization (CI), and collision-induced dissociation (CID) mass spectra of complete series of positional monochloro-isomers of 3-hydroxy-2-phenyl-4(1H)-quinolinone are evaluated and discussed. It is shown that in the CI experiments, in addition to the protonated precursor molecules, odd-electron molecular ions are formed and this affects the appearance of the CID spectra. The influence of different direct probes and other experimental parameters such as the pressure of the reagent gas, isolation width, or collision energy was studied. EI, CI and CID spectra of the positional isomers show essentially the same fragmentation pathways but comparisons of the relative signal intensities of various product ions reveal some positional effects Workplace Institute of Microbiology Contact Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Year of Publishing 2009
Number of the records: 1