Results 1 to 10 of about 330,072 (330)

Taxonomy-Focused Natural Product Databases for Carbon-13 NMR-Based Dereplication

open access: greenAnalytica, 2021
The recent revival of the study of organic natural products as renewable sources of medicinal drugs, cosmetics, dyes, and materials motivated the creation of general purpose structural databases.
Jean-Marc Nuzillard
doaj   +3 more sources

Metathesis Activity Encoded in the Metallacyclobutane Carbon-13 NMR Chemical Shift Tensors [PDF]

open access: yesACS Central Science, 2017
Christopher P. Gordon   +7 more
doaj   +2 more sources

Application of 13C Quantitative NMR Spectroscopy to Isotopic Analyses for Vanillin Authentication Source

open access: yesFoods, 2021
The carbon stable isotope ratio (δ13C) is a valuable chemical parameter in the investigation of the geographic origin, quality, and authenticity of foods.
Concetta Pironti   +5 more
doaj   +1 more source

Evidence for Proline Utilization by Oral Bacterial Biofilms Grown in Saliva

open access: yesFrontiers in Microbiology, 2021
Within the mouth bacteria are starved of saccharides as their main nutrient source between meals and it is unclear what drives their metabolism. Previously oral in vitro biofilms grown in saliva have shown proteolytic degradation of salivary proteins and
Leanne M. Cleaver   +2 more
doaj   +1 more source

Photodegradation study of the fenvalerate insecticide by 1H NMR, 13C NMR, and GC-MS and structural elucidation of its transformation products

open access: yesMacedonian Journal of Chemistry and Chemical Engineering, 2022
The photolysis of fenvalerate, a pyrethroid insecticide, was studied in acetonitrile by 1H nuclear magnetic resonance (NMR) and 13C NMR to identify the site of bond cleavage and gas chromatography-mass spectrometry (GC-MS) to establish the chemical ...
Diène Diégane Thiaré   +9 more
doaj   +1 more source

Sample Thickness and Structural Changes in Thermo-Oxidative Degradation of Polybutadiene [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2012
The thermo-oxidative degradation of two viscous liquid resins of 1,2- poly-butadiene  (1,2-PBD) and 1,4- polybutadiene  (1,4-PBD) have been studied by differential scanning calorimetry (DSC) and thermogravimetry analy-sis  (TGA). To  study  further,  the 
farshid Ziaee, Aida Shoushtari-Zade
doaj   +1 more source

Carbon-13 NMR spectroscopy

open access: yesJournal of Magnetic Resonance (1969), 1973
Journal of Magnetic Resonance (1969) 10 (1973) 241-242. doi:10.1016/0022-2364(73)90225-4 ; Received by publisher: 0000-01-01 ; Harvest Date: 2016-01-04 12:20:16 ; DOI:10.1016/0022-2364(73)90225-4 ; Page Range: 241 ...
Veterans Administration Hospital and Department of Radiology, University of Florida, USA ( host institution )   +1 more
  +5 more sources

Influence of Pyrolysis Temperature on Physico-Chemical Properties of Corn Stover (Zea mays L.) Biochar and Feasibility for Carbon Capture and Energy Balance. [PDF]

open access: yesPLoS ONE, 2016
This study examined the influence of pyrolysis temperature on biochar characteristics and evaluated its suitability for carbon capture and energy production.
Muhammad Khalid Rafiq   +5 more
doaj   +1 more source

Ethyl 1-Butyl-2-(2-hydroxy-4-methoxyphenyl)-1H-benzo[d]imidazole-5-carboxylate

open access: yesMolbank, 2021
Ethyl 4-(butylamino)-3-nitrobenzoate upon “one-pot” nitro-reductive cyclization using sodium dithionite and substituted aldehyde in dimethyl sulphoxide affords ethyl 1-butyl-2-(2-hydroxy-4-methoxyphenyl)-1H-benzo[d]imidazole-5-carboxylate in an 87% yield.
Reshma Sathyanarayana, Boja Poojary
doaj   +1 more source

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