نتایج جستجو برای: semicarbazones
تعداد نتایج: 186 فیلتر نتایج به سال:
A spectrophotometric method has been developed for the determination of Mo(VI) using Acetophenone 2’,5’dihydroxy, semicarbazone as an extractive reagent .The reagent form a colored complex which has been quantitatively extracted into n-Butanol at pH 2.0. The method obeys Beer’s law over a range of 1 to 10 ppm. The molar absorptivity is 7150.83 L molcm and Sandell’s sensitivity is 0.00781 μg cm ...
Difficulties in determining composition and sequence of glycosaminoglycans, such as those related to heparin, have limited the investigation of these biologically important molecules. Here, we report methodology, based on matrix-assisted laser desorption ionization MS and capillary electrophoresis, to follow the time course of the enzymatic degradation of heparin-like glycosaminoglycans through...
The mol-ecule of the title compound C7H8N4O·0.5H2O, alternatively called (E)-1-(pyridin-4-yl-methyl-ene)semi-carb-azide hemihydrate, is in the E conformation and is almost planar; the r.m.s. deviation of the positions of the atoms of the pyridine ring from the best-fit plane is 0.0039 Å. The C, N and O atoms of the rest of the mol-ecule sits close on this plane with a largest deviation of 0.115...
Three newly synthesized copper complexes with pyridoxal semicarbazone (PLSC), as ligand, after being subjected to biological tests, showed anticancer activity. As ligand PLSC is biologically active, the results of biological activity are as expected. Specifically, an activity was demonstrated in breast cancer cells (MCF7 and MDA MB 231) and proliferative cells (MCF7).
The formation of smart Lab-on-a-Chip (LOC) devices featuring integrated sensing optics is currently hindered by convoluted and expensive manufacturing procedures. In this work, a series of 3D-printed LOC devices were designed and manufactured via stereolithography (SL) in a matter of hours. The spectroscopic performance of a variety of optical fibre combinations were tested, and the optimum pat...
The asymmetric unit of title compound, [Fe(C(5)H(5))(C(9)H(12)N(3)S)], contains two crystallographically independent mol-ecules, A and B. The two cyclo-penta-dienyl (Cp) rings are parallel to each other in both mol-ecules, forming dihedral angles of 2.3 (3) and 1.0 (3)°, respectively, and adopt an eclipsed conformation. The mean plane of the semicarbazone group is twisted slightly away from the...
Previously it has been shown that Furacin (5-nitro-2-furaldehyde semicarbazone) inhibited the dismutation of pyruvate by whole resting cells of Micrococcus pyogenes var. aureus (1). Other earlier studies have also shown that both pyruvate dismutation and the formation of acetylmethylcarbinol (AMC) by cell-free extracts of pigeon breast muscle were markedly inhibited by Furacin (2). We are repor...
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