All commercially available chemicals and solvents were directly used without further purification. All reactions were monitored by thin layer chromatography (TLC) on silica gel plates (GF-254). High-resolution mass spectra (HRMS) were measured on an Agilent 1290–6545 UHPLC-QTOF LC/MS spectrometer. 1H NMR and 13C NMR data were recorded on a Bruker AVANCE III instrument (400 MHz) using TMS as an internal standard. Molecular mass was determined on a mass spectrometry (Waters (China) Co., Ltd.). All tested compounds exhibited purities of >95% as analyzed by HPLC (Dionex UltiMate 3000, Germany).
1290 6545 uhplc qtof lc ms spectrometer
Manufactured by Agilent Technologies
The 1290–6545 UHPLC-QTOF LC/MS spectrometer is a high-performance liquid chromatography-quadrupole time-of-flight mass spectrometer designed for advanced analytical applications. It combines an Agilent 1290 Infinity II UHPLC system with a 6545 Q-TOF mass analyzer, providing high-resolution, accurate-mass detection capabilities.
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Lab products found in correlation
3 protocols using 1290 6545 uhplc qtof lc ms spectrometer
1
Analytical Methods for Compound Characterization
2
NMR Spectroscopy and Mass Spectrometry Protocol
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1H NMR and 13C NMR spectra
were recorded on a Bruker 400, 500, or 600 Hz instrument.
Data for 1H NMR were presented as the chemical shift in
ppm, and multiplicities were denoted as follows: s, singlet; d, doublet;
t, triplet; q, quartet; m, multiplet; br, broad. Data for 13C NMR were reported as the chemical shift. The ESI mass spectra were
determined on a Thermo Fisher FINNIGAN LTQ instrument. All high-resolution
mass spectra (HRMS) results were obtained on an Agilent 1290-6545
UHPLC-QTOF LC/MS spectrometer. Thin-layer chromatography was performed
on silica gel plates (GF-254). DCM refers to dichloromethane. Flash
column chromatography was carried out using commercially available
200–300 mesh under pressure unless otherwise indicated. All
commercially available chemicals and solvents were directly used without
further purification unless otherwise noted.
were recorded on a Bruker 400, 500, or 600 Hz instrument.
Data for 1H NMR were presented as the chemical shift in
ppm, and multiplicities were denoted as follows: s, singlet; d, doublet;
t, triplet; q, quartet; m, multiplet; br, broad. Data for 13C NMR were reported as the chemical shift. The ESI mass spectra were
determined on a Thermo Fisher FINNIGAN LTQ instrument. All high-resolution
mass spectra (HRMS) results were obtained on an Agilent 1290-6545
UHPLC-QTOF LC/MS spectrometer. Thin-layer chromatography was performed
on silica gel plates (GF-254). DCM refers to dichloromethane. Flash
column chromatography was carried out using commercially available
200–300 mesh under pressure unless otherwise indicated. All
commercially available chemicals and solvents were directly used without
further purification unless otherwise noted.
3
Spectroscopic Characterization of Compounds
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1H, 19F and 13C NMR spectra were recorded on a Brucker 500 Hz or 600 Hz instrument. Chemical shifts for 1H NMR are reported in parts per million (ppm), and multiplicities are denoted as follows: s, singlet; d, doublet; t, triplet; q, quartet; m, multiplet; br, broad. Chemical shifts for 13C NMR are reported as the chemical shift. Electrospray ionization (ESI) mass spectra were measured using a Thermo Fisher FINNIGAN LTQ instrument. All high-resolution mass spectroscopy (HRMS) results were obtained on an Agilent 1290-6545 UHPLC-QTOF LC/MS spectrometer. TLC inspections were performed on silica gel plates (GF-254). All commercially available chemicals and solvents were used without further purification unless otherwise noted.
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