Results 31 to 40 of about 222,547 (261)

2D NMR study on chemical structure of the co-oligomers from carbon dioxide/propylene oxide/diol synthesized by a metal-free catalyst

open access: yesPolymer Testing, 2022
Co-oligomers of carbon dioxide and propylene oxide with high carbonate content and terminated by hydroxyl groups are practically important polyols to synthesize block copolymers.
Kirill Alferov   +5 more
doaj   +1 more source

Nanogram-scale preparation and NMR analysis for mass-limited small volatile compounds. [PDF]

open access: yesPLoS ONE, 2011
Semiochemicals are often produced in infinitesimally small quantities, so their isolation requires large amounts of starting material, not only requiring significant effort in sample preparation, but also resulting in a complex mixture of compounds from ...
Satoshi Nojima   +4 more
doaj   +1 more source

Complex Mixture Analysis of Organic Compounds in Yogurt by NMR Spectroscopy

open access: yesMetabolites, 2016
NMR measurements do not require separation and chemical modification of samples and therefore rapidly and directly provide non-targeted information on chemical components in complex mixtures.
Yi Lu   +3 more
doaj   +1 more source

Synthesis and characterization of 2,3,13,14-tetramethyl (ethyl or p-tolyl)- 1,4,12,15-tetraazacyclodocosa-1,3,12,14-tetraene complexes of Mg(II), Ca(II), Sr(II) and Ba(II) [PDF]

open access: yesJournal of the Serbian Chemical Society, 2002
2+2 Cyclocondensation of 1,7-diaminoheptane with α-diketones, viz 2,3-butanedione, 3,4-hexanedione or 4,4’-dimethylbenzil, in the presence of Mg2+, Ca2+, Sr2+ and Ba2+ ions as templates yields a series of complexes of the type [ML(X2)](where L = N4 ...
Prasad Raghu N., Gupta Seema
doaj   +1 more source

Synthesis of Substituted Phenyl N-(2-hydroxybenzyl)-N-Methylcarbamates

open access: yesMolecules, 2002
Thirteen previously unreported substituted phenyl N-(2-hydroxybenzyl)-Nmethylcarbamates were prepared by the reaction of substituted 2-hydroxybenzyl-Nmethylamines with phenyl chlorocarbonates. They were identified by their 1H- and 13C-NMR spectra.
Jaromír Kaválek   +3 more
doaj   +1 more source

NMR Spectra

open access: yes, 2004
Peer ...
Chiara, José Luis   +1 more
openaire   +2 more sources

FoodPro: A Web-Based Tool for Evaluating Covariance and Correlation NMR Spectra Associated with Food Processes

open access: yesMetabolites, 2016
Foods from agriculture and fishery products are processed using various technologies. Molecular mixture analysis during food processing has the potential to help us understand the molecular mechanisms involved, thus enabling better cooking of the ...
Eisuke Chikayama   +6 more
doaj   +1 more source

www.nmrdb.org: Resurrecting and Processing NMR Spectra On-line

open access: yesCHIMIA, 2008
NMR spectroscopy is certainly the analytical methodology that provides the most information about a molecule but the long-term vision of this information is often lacking. We present here two innovative tools accessible free from the web.
Damiano Banfi, Luc Patiny
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

Interpreting 2D-NMR spectra using Grad-CAM [PDF]

open access: yesResearch Ideas and Outcomes
It has been shown that it is possible to train a (simple) neural network to classify nuclear magnetic resonance spectra by a substructures either being part of the chemical structure measured or not.
Enriko Kroon   +3 more
doaj   +3 more sources

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