Results 1 to 10 of about 383,654 (289)

Analysis and classification of 1H-NMR spectra by multifractal analysis

open access: yesPLoS ONE, 2023
The objective of this research focuses on the development of a statistical methodology able to answer the question of whether variation in the intake of sulfur amino acids (SAA) affects the metabolic process.
Jongphil Kim   +3 more
doaj   +4 more sources

Chiral Phosphoric Acid Promoted Chiral 1H NMR Analysis of Atropisomeric Quinolines. [PDF]

open access: yesFront Chem, 2021
An efficient enantioselective NMR analysis of atropisomeric quinolines in the promotion of chiral phosphoric acid is described, in which a variety of racemic 4-aryl quinolines were well-recognized with up to 0.17 ppm ΔΔδ value. Additionally, the optical purities of different nonracemic substrates could be evaluated fast via NMR analysis with high ...
Wan J, Jiang J, Li J.
europepmc   +5 more sources

Structural Elucidation and Quantitative Analysis of Hydrogenation Products of Anthracene by NMR Spectroscopy

open access: yesChinese Journal of Magnetic Resonance, 2021
Three product mixtures of anthracene catalytic hydrogenation under different catalytic conditions were analyzed by nuclear magnetic resonance (NMR) spectroscopy.
Meng-yu DOU   +5 more
doaj   +1 more source

Spectroscopic Studies of Delafloxacin Meglumine

open access: yesChinese Journal of Magnetic Resonance, 2021
The structure of delafloxacin meglumine was analyzed by infrared absorption (IR), ultraviolet absorption (UV), nuclear magnetic resonance (1H NMR, 13C NMR, DEPT, 1H-1H COSY, 1H-13C HSQC and 1H-13C HMBC) spectroscopy, mass spectrometry and elemental ...
Xin-yi ZHAO   +4 more
doaj   +1 more source

Research Progress of 1H NMR-based Metabonomics for Food Adulteration and Traceability Analysis

open access: yesShipin gongye ke-ji, 2022
Due to various influences in the process of origin, processing, storage and transportation, food products are complex and changeable. Therefore, it is challenging to analyze and determine the adulteration and traceability of food.
Zhanming LI   +6 more
doaj   +1 more source

1H Nuclear Magnetic Resonance: A Future Approach to the Metabolic Profiling of Psychedelics in Human Biofluids?

open access: yesFrontiers in Psychiatry, 2021
While psychedelics may have therapeutic potential for treating mental health disorders such as depression, further research is needed to better understand their biological effects and mechanisms of action when considering the development of future novel ...
Sylvana Vilca-Melendez   +3 more
doaj   +1 more source

1H-NMR metabolomics for wine screening and analysis

open access: yesOENO One, 2023
The number of metabolomic studies has grown steadily over the last twenty years. Among the fields of application, food sciences are broadly represented.
Inès Le Mao   +2 more
doaj   +1 more source

Spectral Analysis and Structural Elucidation of Luliconazole

open access: yesChinese Journal of Magnetic Resonance, 2018
Infrared spectra, ultraviolet spectra, nuclear magnetic resonance (NMR) spectra (i.e., 1H NMR, 13C NMR, DEPT135, 1H-1H COSY, 1H-13C HMQC and 1H-13C HMBC) and mass spectra of luliconazole were collected and used to characterize the compound.
LIN Yun-liang   +3 more
doaj   +1 more source

900MHz 1H-/13C-NMR analysis of 2-hydroxyglutarate and other brain metabolites in human brain tumor tissue extracts. [PDF]

open access: yesPLoS ONE, 2018
PURPOSE:To perform in vitro high-resolution 900 MHz magnetic resonance spectroscopy (NMR) analysis of human brain tumor tissue extracts and analyze for the oncometabolite 2-hydroxyglutarate (2HG) and other brain metabolites, not only for 1H but also for ...
Gregory Hyung Jin Park   +2 more
doaj   +1 more source

Fast screening of turkish olive oil by NMR spectroscopy for geographical determination and discrimination purposes

open access: yesGrasas y Aceites, 2014
The main goal of this study is to rapidly screen olive oil contents by acquiring one dimensional (1D) 1H NMR spectra of 38 samples from Turkey, The Middle East, and Libya.
S. Ok
doaj   +1 more source

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