Mass spectra were recorded with a Bruker Esquire-LC instrument. High-resolution (HR) mass spectra (electron spin ionization, ESI) were recorded on an ESI/TOF (LCT, Waters) LC-spectrometer. Elemental analyses were performed by the Service de microanalyse, Centre d’Etudes Pharmaceutiques, Châtenay-Malabry, France, with a PerkinElmer 2400 analyzer.
Esi tof lct
Manufactured by Waters Corporation
The ESI/TOF (LCT) is a mass spectrometry instrument that combines electrospray ionization (ESI) with time-of-flight (TOF) mass analysis. It is designed to provide accurate mass measurements of a wide range of molecules, including proteins, peptides, and other biomolecules. The ESI/TOF (LCT) enables the identification and characterization of these compounds through precise mass determination.
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Lab products found in correlation
2 protocols using esi tof lct
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Mass Spectrometry Analytical Methods
2
NMR and Mass Spectrometry Characterization
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Nuclear magnetic resonance (NMR) spectroscopy. NMR spectroscopy was performed in 5 mm diameter tubes in CDCl 3 at 25 °C. 1 H and 13 C NMR spectroscopy was performed on a Bruker
Avance 300 spectrometer at 300 MHz ( 1 H) and 75 MHz ( 13 C), respectively. The chemical shift scale was calibrated based on the internal solvent signals. For nitroxide derivative characterization, pentafluoruphenylhydrazine was added in situ and allowed to react before the analysis. 35, 36 Mass spectrometry. Mass spectra were recorded with a Bruker Esquire-LC instrument. Highresolution mass spectra (ESI) were recorded on an ESI/TOF (LCT, Waters) LC-spectrometer.
Avance 300 spectrometer at 300 MHz ( 1 H) and 75 MHz ( 13 C), respectively. The chemical shift scale was calibrated based on the internal solvent signals. For nitroxide derivative characterization, pentafluoruphenylhydrazine was added in situ and allowed to react before the analysis. 35, 36 Mass spectrometry. Mass spectra were recorded with a Bruker Esquire-LC instrument. Highresolution mass spectra (ESI) were recorded on an ESI/TOF (LCT, Waters) LC-spectrometer.
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