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Showing 1-30 of 38 results for "B4007" within Papers
Chenglong Yu et al.
Chemosphere, 222, 593-602 (2019-02-08)
Nowadays non-steroidal anti-inflammatory drugs (NSAIDs) are often detected in surface water and groundwater. In this study, effects of environmental factors, i.e., solution pH, ionic strength, temperature and surface-bound organic acids, on bonding of three typical NSAIDs (ketoprofen, naproxen and diclofenac)
Jacek Gawroński et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 8(11), 2484-2494 (2002-08-16)
The chiral but highly symmetrical acyclic and cyclic pyromellitic diimide dimers and trimers 2-5 have been obtained and characterized for the first time. The pyromellitdiimide chromophores in these molecules are linked by a rigid diequatorially 1,2-disubstituted cyclohexane skeleton. The structures
1, 2, 4, 5?Benzenetetracarboxylic Acid and 4, 4??Bipyridine as Ligands in Designing Low?Dimensional Coordination Polymers.
Ruiz?Perez C, et al.
European Journal of Inorganic Chemistry, 2004(19), 3873-3879 (2004)
Renata Diniz et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 67(2), 372-377 (2006-09-05)
Cobalt and zinc salts of 1,2,4,5-benzenetetracarboxylic acid (pyromellitic acid), [C(6)H(2)(COO)(4)H(4)], have been synthesized and investigate by polarized Raman spectroscopy. These compounds present short intramolecular hydrogen bonds (SHB) between adjacent carboxyl groups. Raman spectra indicate the presence of this interaction in
Hnin Thanda Aung et al.
Bioorganic & medicinal chemistry, 19(23), 7000-7002 (2011-11-04)
Previously, we reported the structural requirements of the cinnamic acid relatives for inhibition of snake venom hemorrhagic action. In the present study, we examined the effect of benzenepolycarboxylic acids and substituted benzoic acids against Protobothropsflavoviridis venom-induced hemorrhage. Pyromellitic acid (1,2,4,5-benzenetetracarboxylic
Yu Liu et al.
Carbohydrate research, 338(17), 1751-1757 (2003-08-02)
A novel bridged bis(beta-cyclodextrin) with a pyromellitic acid 2,5-diamide tether (2) has been synthesized by reaction of 6(I)-(2-aminoethyleneamino)-6-deoxycyclomaltoheptaose [mono 6-(2-aminoethyleneamino)-6-deoxy-beta-cyclodextrin] with 1,2,4,5-benzenetetracarboxylic dianhydride. Its inclusion complexation behavior with some representative dyestuffs, i.e., Acridine Red (AR), Rhodamine B (RhB), Neutral Red
G Raber et al.
Journal of chromatography. A, 890(2), 355-361 (2000-09-29)
It is widely accepted that preconditioning procedures are indispensable in capillary electrophoresis in order to achieve reproducibility of migration times and peak areas. Several preconditioning strategies have been employed for electrophoretic determinations of inorganic anions using indirect UV detection including
Wide control of proton conductivity in porous coordination polymers.
Shigematsu A, et al.
Journal of the American Chemical Society, 133(7), 2034-2036 (2011)
R Nadrowitz
Strahlentherapie und Onkologie : Organ der Deutschen Rontgengesellschaft ... [et al], 170(3), 174-179 (1994-03-01)
The intention of the study was to demonstrate that a chemical dosimeter on the basis of fluorescing acids is able to measure ionizing radiation much more sensitively than the Fricke dosimeter. As detectors for ionizing radiation pyromellitic acid (1,2,4,5-benzene-tetracarboxylic acid)
X Xiong et al.
Electrophoresis, 19(12), 2243-2251 (1998-10-07)
The simultaneous separation and detection of small cations and anions by capillary zone electrophoresis (CZE) with indirect ultraviolet (UV) detection was successfully demonstrated in a background electrolyte (BGE) containing two UV-absorbing components. Benzylamine, imidazole, benzenesulfonic acid, sulfosalicylic acid, and pyromellitic
Astrid Barkleit et al.
Inorganic chemistry, 50(12), 5451-5459 (2011-05-25)
Thermodynamic parameters for the complexation of Eu(3+) with pyromellitic acid (1,2,4,5-benzenetetracarboxylic acid, BTC) as a model system for polymerizable metal-complexing humic acids were determined using temperature-dependent time-resolved laser-induced fluorescence spectroscopy (TRLFS) and isothermal titration calorimetry (ITC). At low metal and
Roger Nadrowitz et al.
Physics in medicine and biology, 57(5), 1325-1333 (2012-02-22)
The pyromellitic acid (benzene-1,2,4,5-tetracrboxylic acid) dosimeter is a liquid, nearly tissue equivalent detector (the density of the solution is 1.000 56 g cm⁻³). This acid fluoresces after exposure to proton radiation, if excited with light. The detector was exposed to proton
Xiaoming Liang et al.
Water research, 44(7), 2125-2132 (2010-01-05)
Interest has grown in the use of reactive minerals for natural and engineered transformation of ground water contaminants. This study investigated how the structural properties of 10 model compounds representing natural organic matter (NOM) influenced their adsorption to chloride green
Functionalization in flexible porous solids: Effects on the pore opening and the host? guest interactions.
Devic T, et al.
Journal of the American Chemical Society, 132(3), 1127-1136 (2009)
Er-Wen Huang et al.
Atherosclerosis, 254, 133-141 (2016-10-16)
Macrophage-derived foam cell formation (MFCF) is a crucial step in the pathogenesis of atherosclerosis. Uptake of oxidized low-density lipoprotein (oxLDL) by scavenger receptors is indispensable for MFCF. Endophilin-A2 has been reported to regulate clathrin-mediated endocytosis (CME). In this study, we
Investigation on the assembled structure?property correlation of supramolecular hydrogel formed from low-molecular-weight gelator.
Wang Y, et al.
Journal of Colloid and Interface Science, 319(1), 357-364 (2008)
Mukund P Sibi et al.
Journal of the American Chemical Society, 128(41), 13346-13347 (2006-10-13)
This paper describes a highly site-, diastereo-, and enantioselective intermolecular radical addition/hydrogen atom transfer to hydroxypyrone pyromeconic and kojic acids. The methodology can be extended to the formation of chiral quaternary centers. The products obtained are densely functionalized pyran moieties.
New hydrogen-bonded supramolecular hydrogels and fibers derived from 1, 2, 4, 5-benzenetetracarboxylic acid and 4-hydroxypyridine.
Wang Y, et al.
Chemistry Letters (Jpn), 35(5), 548-549 (2006)
Olga Grechishkina
Journal of chromatography. A, 948(1-2), 65-67 (2003-07-02)
The retention of aromatic carboxylic acids and their esters in reversed-phase HPLC is proportional to the sum of their partition coefficients in octanol-water system and retention increments. This equation can be used for the identification of various side-products formed in
Thomas Ehmann et al.
Journal of chromatography. A, 995(1-2), 217-226 (2003-06-13)
For the determination of inorganic and organic anions, the pyromellitic acid (PMA) electrolyte is widely used. The pH adjustment of the self-prepared electrolyte was very challenging to satisfy the pH of specification of pH 7.8 +/- 0.1. A modification was
T Görner et al.
Journal of chromatography. B, Biomedical sciences and applications, 694(1), 39-48 (1997-06-20)
A new support for affinity chromatography of hemoglobin was synthesised from EAH Sepharose-4B containing a hexamethylamine spacer. Benzenetetracarboxylic (BTC) or benzenehexacarboxylic (BHC) acids were covalently bound to the spacer arm. At pH close to the pI of the protein, the
K-J Westin et al.
Journal of colloid and interface science, 282(2), 359-369 (2004-12-14)
The influence of four calcium complexing substances, i.e., citric acid (CIT), diethylenetriaminepentaacetic acid (DTPA), ethylenediaminetetraacetic acid (EDTA) and pyromellitic acid (PMA), on the crystal growth rate of the calcium carbonate polymorphs aragonite and calcite has been studied. Using a seeded
S Mallet et al.
Journal of chromatography. A, 853(1-2), 181-184 (1999-09-16)
Tartaric acid, used in pharmaceuticals and industrial food preparation, is an important by-product of wine preparation. It is produced by wine factories in large quantities and cannot be rejected into the environment. Wineries precipitate tartaric acid using calcium hydroxide and
New Two-Dimensional Metal? Organic Networks Constructed from 1, 2, 4, 5-Benzenetetracarboxylate and Chelate Ligands.
Li Y, et al.
Inorganic Chemistry, 42(9), 3119-3124 (2003)
K Ohta et al.
Journal of chromatography. A, 850(1-2), 177-185 (1999-08-24)
The modification of silica gel with aluminium by a coating method was effective for the preparation of a silica-based stationary phase, which acted as a cation exchanger under strongly acidic conditions. In order to expand the utility of the laboratory-made
Gustavo A Blanco-Heras et al.
Journal of chromatography. A, 1144(2), 275-278 (2007-02-13)
Selectivity and robustness of the pyromellitic acid (PMA) based background electrolyte was improved in order to increase its applicability for routine analysis of inorganic and organic anions in real samples. An electrolyte composed of 6.75 mM PMA, 0.5 mM hexamethonium
Xiao-Yi Song et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 26(25), 5654-5661 (2020-02-23)
Novel lithium-lanthanide (Ln: cerium and praseodymium) bimetallic coordination polymers with formulas C10 H2 LnLiO8 (Ln: Ce (CeLipma) and Pr (PrLipma)) and C10 H3 CeO8 (Cepma) were prepared through a simple hydrothermal method. The three compounds were characterized by means of
A Chattopadhyay et al.
Journal of chromatography. A, 758(2), 255-261 (1997-01-17)
A capillary electrophoresis (CE) method was developed for determining the diol content of supports used in high-performance affinity or size exclusion chromatography. This method involved oxidizing the diol-bonded support with periodate, followed by the use of CE to separate and
Minghua Chen et al.
Polymers, 12(2) (2020-02-09)
Polymeric materials have many applications in multiple industries. In this paper, silicon nitride nanoparticles (Si3N4) were incorporated into a polyimide (PI) matrix to obtain composite films via the in situ polymerization method. The Si3N4 nanoparticles were consistently scattered in the
Tomoko Genda et al.
Bioscience, biotechnology, and biochemistry, 70(5), 1102-1109 (2006-05-24)
Fumarase (EC 4.2.1.2) from Corynebacterium glutamicum (Brevibacterium flavum) ATCC 14067 was purified to homogeneity. Its amino-terminal sequence (residues 1 to 30) corresponded to the sequence (residues 6 to 35) of the deduced product of the fumarase gene of C. glutamicum
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