Results 21 to 30 of about 4,831 (193)

Benchtop NMR Coupled with Chemometrics: A Workflow for Unveiling Hidden Drug Ingredients in Honey-Based Supplements [PDF]

Molecules
Recently, benchtop nuclear magnetic resonance (NMR) spectrometers utilizing permanent magnets have emerged as versatile tools with applications across various fields, including food and pharmaceuticals.
Camille Pujol, Saïda Danoun, Ghislaine Biasini, Emmanuel Retailleau, Jessica Masson, Stéphane Balayssac, Véronique Gilard   +6 more
doaj   +2 more sources

Using 2D experiments with reverse heteronuclear correlation on a benchtop NMR spectrometer X-Pulse to study the structure of gemfibrozil

Разработка и регистрация лекарственных средств, 2021
The article discusses application of two powerful NMR techniques ME-HSQC and HMBC to determine the structure of gemfibrozil molecules as an example on the benchtop NMR spectrometer X-Pulse.

doaj   +1 more source

Benchtop NMR Spectroscopy in Process Engineering [PDF]

Nuclear magnetic resonance (NMR) is a highly attractive powerful method that enables non-invasive analysis of complex mixtures without requiring tedious calibration procedures. Benchtop NMR spectrometers are small, robust, and inexpensive, which makes them especially suited for process and reaction monitoring.
Phuong, Johnnie The
openaire   +3 more sources

Enhancing ¹⁹F Benchtop NMR Spectroscopy by Combining para-Hydrogen Hyperpolarization and Multiplet Refocusing. [PDF]

ACS Meas Sci Au, 2023
Benchtop NMR spectrometers provide a promising alternative to high-field NMR for applications that are limited by instrument size and/or cost. 19F benchtop NMR is attractive due to the larger chemical shift range of 19F relative to 1H and the lack of ...
Silva Terra AI, Rossetto M, Dickson CL, Peat G, Uhrín D, Halse ME.   +5 more
europepmc   +2 more sources

In situ Hyperpolarization Enables Benchtop NMR of Heteronuclei at Natural Isotopic Abundance

, 2023
Without employing isotopic labeling, we demonstrate generation of 15N and 13C NMR signals for molecules containing -NH2 motifs using benchtop NMR spectrometers (1-1.4 T).
Raphael, Kircher, Jingyan, Xu, Danila, Barskiy   +2 more
core   +1 more source

SHARPER-enhanced benchtop NMR

, 2022
The deposited data are NMR spectra of model compounds discussed in our paper (Fig. 2 and 3), "SHARPER-enhanced benchtop NMR: improving SNR by removing couplings and approaching natural linewidths" ( DOI: 10.1039/d2cc01325h.) .
Peat, George, Uhrin, Dusan, EaStCHEM, School of Chemistry   +3 more
core   +1 more source

Functionalized Controlled Porous Glasses for Producing Radical-Free Hyperpolarized Liquids by Overhauser DNP

Molecules, 2022
Overhauser dynamic nuclear polarization (ODNP) can be used as a tool for NMR signal enhancement and happens on very short time scales. Therefore, ODNP is well suited for the measurement of fast-flowing samples, even in compact magnets, which is ...
Raphael Kircher, Sarah Mross, Hans Hasse, Kerstin Münnemann   +3 more
doaj   +1 more source

Benchtop 19F nuclear magnetic resonance (NMR) spectroscopy provides mechanistic insight into the Biginelli condensation towards the chemical synthesis of novel trifluorinated dihydro- and tetrahydropyrimidinones as antiproliferative agents

, 2022
Benchtop nuclear magnetic resonance (NMR) spectroscopy has enabled the monitoring and optimization of chemical transformations while simultaneously providing kinetic, mechanistic, and structural insight into reaction pathways with quantitative precision.
Edward, Njoo, Rosie, Chen, Xina, Wang, Neha, Mandava, Srishti, Venkatesan, Casey, Rojas, Pratyush, Singh, Selin, Kocalar, Adrienne, Ferguson, Emma, Le, Sarah, Su, Aishi, Rao   +11 more
core   +1 more source

¹²⁹Xe ultra-fast Z spectroscopy enables micromolar detection of biosensors on a 1 T benchtop spectrometer [PDF]

Magnetic Resonance, 2021
The availability of a benchtop nuclear magnetic resonance (NMR) spectrometer, of low cost and easily transportable, can allow detection of low quantities of biosensors, provided that hyperpolarized species are used.
K. Chighine, E. Léonce, C. Boutin, H. Desvaux, P. Berthault   +4 more
doaj   +1 more source

Determination of self-diffusion coefficients in mixtures with benchtop 13C NMR spectroscopy via polarization transfer [PDF]

, 2023
Nuclear magnetic resonance (NMR) is an established method to determine self-diffusion coefficients in liquids with high precision. The development of benchtop NMR spectrometers makes the method accessible to a wider community.
Phuong, Johnnie, Hasse, Hans, Bellaire, Daniel, Münnemann, Kerstin, Mross, Sarah   +4 more
core   +1 more source