Conformational problems are often subtle but very important in controlling many intricate features in chemistry and biochemistry. We have performed the conformational analysis of glycinamide using NMR experiments and computational studies. 1H NMR experiments suggest the prevalence of intramolecu...

To study separation of maltopentaose from maltooligosaccharide mixtures, we investigated the adsorption equilibrium and kinetics of monosaccharides (fructose, galactose, and glucose), disaccharides (sucrose, maltose, and lactose), and maltooligosaccharides (maltotriose, maltotetraose, and maltop...

The crystallization of maltopentaose from concentrated aqueous mixtures was studied by differential scanning calorimetry, X-ray diffraction and polarised light microscopy. Under the conditions of study it was observed that maltopentaose crystallized as a hydrate, with single crystals assembling ...

Starch branching enzyme (SBE) catalyzes the cleavage of α-1,4-linkages and the subsequent transfer of α-1,4 glucan to form an α-1,6 branch point in amylopectin. We determined the crystal structure of the rice branching enzyme I (BEI) in complex with maltopentaose at a resolution of 2.2 Å. Mal...

Reactions of stoichiometric amounts of L1(−) (HL1 = 3-(2-pyridyl)pyrazole) with [Cu(H2O)6](ClO4)2, with or without PhCO2−, in MeOH or N,N′-dimethylformamide (dmf), led to the isolation of three copper(II) complexes of varying nuclearity, [CuII2(L1)2(ClO4)2(MeOH)2] (1), [CuII4(L1)4(O2CPh)2(MeOH)...

This mini-review article summarizes the O2-reactivity of copper(I) complexes supported by a series of 2-(2-pyridyl)ethylamine (Pye) based ligands, which was developed by Karlin and his coworkers for biomimetic copper-oxygen chemistry. Oxygenation reaction of the copper(I) complexes supported by ...

Coordination abilities of tris[2-(2-pyridyl)ethyl]phosphine (L) toward Ag(I) and Au(I) have been surveyed. Its reaction with AgClO4, AgNO3 and AgOTf results in self-assembly of 1D coordination polymers (CPs) of [Ag(L)X]n type (X = ClO4, NO3, OTf), built up by conjugated twelve-membered [Ag(NCCCP...

A series of novel cationic [Ir(C^N)2)(N^N)]3+ complexes bearing deprotonated 1-methyl-2-(2′-pyridyl)pyridinium (C^N) as cyclometalating ligand and 1,10-phenanthroline derivatives (N^N) as ancillary ligands have been prepared in the form of PF6− salts and identified by means of 1H and 31P NMR sp...

The designed 2:1 reaction of the mononuclear precursor (metalloligand) facial-tris(2-pyridinealdoxi-mato)cobalt(III) and dysprosium(III) sources has yielded the anticipated dicobalt(III)-dysposium(III) cluster, which has been fully characterized. This synthetic strategy can be extended to other ...

The initial employment of methyl 2-pyridyl ketoxime, (py)C(Me)NOH, in mixed metal Ni/Mn cluster chemistry, provided access to complexes [NiII2MnIII{(py)C(Me)NO}6](ClO4) (1) and [NiII2MnIII2{(py)C(Me)NO}6(OMe)2(MeOH)2](ClO4)2 (2) that display a linear and a zig-zag metal arrangement, respectively...

α-Amidoboronic acids have received significant attention in recent years following the development of Bortezomib as an FDA-approved treatment of multiple myeloma and mantle cell lymphoma. More versatile methods to access α-amidoboronic acids continue to be developed. A direct method to access ...

Concentration levels of organophosphorus pesticides like Chlorfenvinphos and Malathion were determined by lipase enzyme inhibition method. The developed enzymatic method was purely based on in situ generation of p-Nitrophenol by enzymatic hydrolysis of p-Nitrophenyl Acetate. The production of th...

General population exposure to pesticides mainly occurs via food and water consumption. However, their risk assessment for regulatory purposes does not currently consider the actual co-exposure to multiple substances. To address this concern, relevant experimental studies are needed to fill the ...

In the present study, the investigation of the effect of chlorfenvinphos (CFVF) on necrotic and apoptotic changes as well as on selected morphological and biochemical parameters in human blood mononuclear cells were investigated.We analyzed the effect of this compound on proteins damage and free...

A method for the determination of chlorfenvinphos, ethion and linuron in liver samples by LC-MS/MS is described. Sample treatment was performed by using Sola™ polymeric reverse phase SPE cartridges after protein precipitation. Gradient elution using 10 mM ammonium formate in methanol (A) and 10 ...

The aim of this work was to examine the effect of two organophosphorous compounds i.e. bromfenvinphos (BFVF) and chlorfenvinphos (CFVF) possessing acaricidal and insecticidal properties, on the activity of human erythrocytes acetylcholinesterase (AChE, EC 3.1.1.7). Moreover, the effect of five b...

Luminescence quenching probe ratio Tb(III):(L) in 1:3 stoichiometric has been studied in methanol in the bearing of the pesticides Chlorfenvinphos and Dichlorvos. The luminescence intensity of Tb(III)–(L)3 probe decreases as the concentrations of the pesticide increases. Direct methods for the ...

Chlorfenvinphos (CAS 470-90-6) is an organophosphorus insecticide manufactured for insecticidal use. All uses and sales in the United States were banned in 1991 and in the European Union in 2006. It continues to be an important veterinary medicine for controlling livestock ectoparasites in Austr...

A photoelectrocatalyst consisting of WO3 nanosheets or nanorods has been synthesized by electrochemical anodization under hydrodynamic conditions, and has been used for the degradation of two toxic pesticides: chlorfenvinphos and bromacil. Nanostructures have been characterized by FESEM and Rama...

A visible-light driven photoelectrochemical degradation process has been applied to a solution polluted with the organophosphate insecticide chlorfenvinphos. Different WO3 nanosheets/nanorods have been used as photoanodes. These nanostructured electrodes have been fabricated by anodization of tu...