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Mechanism study of SO2 elimination from sulfonamides by negative electrospray ionization mass spectrometry.
The elimination of SO2 from deprotonated sulfonamides in the negative ion mode was confirmed by Fourier transform ion cyclotron resonance mass spectrometry (FTICR-MS) experiments. For a set ofExpand
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Resveratrol and its oligomers from wine grapes are selective (1)O2 quenchers: mechanistic implication by high-performance liquid chromatography-electrospray ionization-tandem mass spectrometry and
Resveratrol and its oligomers, abundantly present in wine grapes, are believed to be effective phytoalexins for the phenomenon "French paradox" partially by virtue of their powerful antiradicalExpand
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HPLC/QTOF-MS/MS application to investigate phenolic constituents from Ficus pandurata H. aerial roots.
Ficus pandurata H. aerial roots are used as a traditional Chinese medicine for the treatment of uarthritis, indigestion and hyperuricemia. However, the bioactive constituents responsible for theExpand
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Evidence for the 2:1 molecular recognition and inclusion behaviour between β- and γ-cyclodextrins and cinchonine
Abstract Cinchonine (Cin) is the primary drug of choice in the treatment of malaria, but its poor solubility has restricted its use via the oral route. Cyclodextrins (CDs) form inclusion complexesExpand
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Ionic liquid functionalized silica gel : novel catalyst and fixed solvent
Imidazolium cation-based ionic liquid functionalized silica gel was prepared, and Knoevenagel condensation as well as cycloaddition of propylene oxide and carbon dioxide without any additionalExpand
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A BODIPY derivative as a colorimetric, near-infrared and turn-on chemosensor for Cu2+.
  • S. Yin, Wenli Yuan, +4 authors H. Qiu
  • Medicine, Chemistry
  • Spectrochimica acta. Part A, Molecular and…
  • 1 October 2012
A new colorimetric and near-infrared (NIR) fluorescent chemosensor (1) for Cu(2+) based on BODIPY has been synthesized and investigated in this work. 1 Displays a high selectivity for Cu(2+) withExpand
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Observation of the Intermediates of In-Source Aldolization Reactions in Electrospray Ionization Mass Spectrometry Analysis of Heteroaromatic Aldehydes
Electrospray ionization mass spectrometry (ESI-MS) analyses of 2-(1,2,4-triazole-1-yl)-6-methyl-3-quinolinecarboxaldehyde were carried out by using an ion trap mass spectrometer in a positive-ionExpand
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A BODIPY derivative for colorimetric fluorescence sensing of Hg2+, Pb2+ and Cu2+ ions and its application in logic gates.
A BODIPY-based colorimetric and fluorescent chemosensor 1 anchored with dipyridylamino (DPA) receptor has been designed, synthesized and characterized. It exhibited a simultaneous sensitiveExpand
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Dissociative protonation and proton transfers: fragmentation of alpha, beta-unsaturated aromatic ketones in mass spectrometry.
In mass spectrometry of the alpha,beta-unsaturated aromatic ketones, Ph-CO-CH=CH-Ph', losses of a benzene from the two ends and elimination of a styrene are the three major fragmentation reactions ofExpand
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Intramolecular charge transfer in the gas phase: fragmentation of protonated sulfonamides in mass spectrometry.
The fragmentation of protonated molecules (MH(+)) in mass spectrometry usually results in even-electron product ions, but the MH(+) ions of sulfonamides are different as they often produce dominantExpand
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