Results 11 to 20 of about 213,603 (266)
Spectroscopic Studies of Delafloxacin Meglumine
Chinese 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
Spectral Analyses and Structural Elucidation of Cyflumetofen
Chinese Journal of Magnetic Resonance, 2020 Cyflumetofen is a new type of acaricide with high efficiency and low residue. In this work, the compound was characterized by infrared absorption (IR), ultraviolet absorption (UV) and mass spectrometry, as well as nuclear magnetic resonance spectroscopy (
ZHANG Yi-ming +2 more
doaj +1 more source
Analyzing Pentaerythritol Stearate Homologs with NMR Spectroscopy
Chinese Journal of Magnetic Resonance, 2018 A pentaerythritol stearate sample with unknown composition was analyzed by nuclear magnetic resonance (NMR) spectroscopy (i.e., 1H NMR, quantitative 13C NMR, DEPT135, 1H-1H COSY, 1H-1H NOESY, 1H-13C HSQC and 1H-13C HMBC).
LI Chun-fa +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]
PLoS 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
Journal of Molecular Structure, 2007 Abstract Proton NMR spin–lattice relaxation times T1 were measured for urea as a function of temperature. An activation energy of 46.3 ± 4.7 kJ/mol was extracted and compared with the range of 38–65 kJ/mol previously reported in the literature as measured by different magnetic resonance techniques.
Taylor, Robert E +2 more
openaire +3 more sources
Structural Elucidation and NMR Spectral Assignments of Two C19-Diterpenoid Alkaloids
Chinese Journal of Magnetic Resonance, 2018 Two C19-diterpenoid alkaloids, homochasmanine (compound 1) and 14-debenzoylfranchetine (compound 2), were isolated from the roots of Aconitum handelianum. Their structures were elucidated by one-dimensional and two-dimensional nuclear magnetic resonance (
YIN Tian-peng +4 more
doaj +1 more source
Chinese Journal of Magnetic Resonance, 2019 The nucleoside derivative N-isobutyryl-3'-O-(1-fluoro-1,1,3,3-tetraisopropyl-1,3-disiloxane-3-yl)-2'-benzyloxy carbonyl-guanosine (compound 1) was obtained by selectively cleaving the 1,1,3,3-tetraisopropyldisiloxanyl protecting group at 5'-position with
WEI Hui-qiang +5 more
doaj +1 more source
Spectral data of nicotabaflavonoidglycoside
Data in Brief, 2018 The dataset addressed in this article relates to the research article entitled“Nicotabaflavonoidglycoside, the first example of cembranoid and flavonoid heterodimer from Nicotiana tabacum” (Yang et al., 2018) [1]. The dataset presents the MS4(879-571-421-
Cai-Yan Yang +5 more
doaj +1 more source
Chinese Journal of Magnetic ResonanceIn this paper, one-dimensional (1H NMR, 13C NMR, DEPT, and 19F NMR) and two-dimensional NMR (1H-1H COSY, 1H-13C HMBC, and 1H-13C HSQC) techniques were applied to perform structural identification and NMR spectral assignments of the fluorine-containing ...
ZHENG Jiaqi +3 more
doaj +1 more source
Journal of the Turkish Chemical Society, Section A: Chemistry, 2016 In this study, 1-(morpholine-4-yl-methyl)-3-benzyl-4-(4-isopropylbenzylidenamino)-4,5-dihydro-1H-1,2,4-triazol-5-one (1) was synthesized by the reaction of compound 3-benzyl-4-(4-isopropylbenzylidenamino)-4,5-dihydro-1H-1,2,4-triazol-5-one with ...
Gül KOTAN, Haydar Yüksek
doaj +1 more source