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The bulk enol content observed for the model compound, 2,4-pentanedione as determined by bromometric methods depends on the time interval between additdoi:10.1016/S0003-2670(01)85251-XC.H. LochmüllerElsevier B.V.Analytica Chimica Acta
The reactivity of the keto鈥揺nol tautomers depends on the nature of the heteroatom and the substituents that are present on the ring. Each tautomeric pair reacts with dimethyl acetylenedicarboxylate (DMAD) in methanol to give the 5,6-ring-fused 8-benzoyl-5-oxo-5H-thiazolo- and 8-benzoyl...
The percentage of hemolysis of erythrocytes, H(%), was determined spectrophotometrically based on the ratio of hemoglobin (Hb) released from cells to the total cellular Hb content after hemolysis with distilled water. H(%) was calculated on the basis of absorbance changes at 630 nm after oxi...
Find out how to access preview-only content Research on Chemical Intermediates May 2013 Photochemical reactions of 1,2-diketones with silyl enol ethers Hea Jung Park, Ung Chan Yoon, Sung Hong Kim, Youngku Sohn, Dae Won Cho, Patrick S. Mariano $39.95 / €34.95 / £29.95 * ...
With the Envidor 240SC insecticide, we determined that the DDR depends on the activation of the ATRmei29D/Chk1grp and ATMtefu/Chk2lok kinases, and p53dp53 by significantly increasing the percentage of expression of 纬H2AV in the germarium.González-Marín, Berenyce...
After 30 min incubation at room temperature (when the formazan crystal has completely dissolved), the optical density (OD) of the well content was measured with a spectrophotometer Multiskan FC (Thermo Scientific) at a wavelength of 540 nm. The cell viability in experimental samples was ...
The tautomerism of curcumin (Cur) in water-ethanol solutions in the presence of fumed silica was studied by UV-visible spectroscopy. The results showed that the enol tautomer exists at an ethanol concentration in solution >50%, and with an increase in the water content, the tautomeric ...
The analysis on the content of fullerenol were carried out by electron spectrophotometry, according to the Bouguer-Lambert-Ber law (spectro-photometer UV 1280) by the optical density at the wavelength λ = 400 nm − D400 (see Figure 1 and Figure 2): C(g/dm3) = 0.937*D400 (width of...