One new Metal-Organic Framework, [Zr6O4(OH)8(H2O)4(L)4]n (1, H4L = 5′,5″″-sulfonylbis(2′-amino-[1,1′:3′,1″-terphenyl]-4,4″-dicarboxylic acid)), had been successfully constructed, which had been structurally characterized. It was revealed that 8-connected Zr6 cluster had been fabricated, ...

Sulfoxides occur in biology as products of the S-oxygenation of small molecules as well as in peptides and proteins and their formation is often associated with oxidative stress and can affect biological function. In bacteria, sulfoxide damage can be reversed by different types of enzymes. Thior...

This study describes several original methods that were developed with the goal of measuring phthalates and terephthalates. These methods include gas chromatography/mass spectrometry (GC/MS), GC/MS/MS, liquid chromatography with UV detection (LC/UV), LC/MS, and LC/MS/MS. The study compares the a...

The catalytic behavior of the superbases Na/NaOH/γ-Al2O3 and CsxO/γ-Al2O3 was investigated in the transesterification of methyl benzoate and dimethyl terephthalate with ethylene glycol. The reactions were carried out in liquid phase under atmospheric pressure. The dependencies of conversion, s...

The reaction between ethylene carbonate and dimethyl terephthalate was carried out for the simultaneous synthesis of dimethyl carbonate and poly (ethylene terephthalate). This reaction is an excellent chemical process that is environmentally friendly and produces no poisonous substance. The meta...

Biodegradation of dimethyl terephthalate (DMT) by individual species of bacteria isolated from mangrove sediment was conducted in batch experiments. Four morphologically distinct microorganisms, two of which showed ability to degrade DMT completely, were obtained and identified. Pasteurella mult...

Dimethyl terephthalate (DMTP), the para configuration of dimethyl phthalate, is one of the basic monomers used in the synthesis of polyethylene terephthalate (PET) plastics. Human exposure to DMTP may primarily occur during the manufacture of PET fibers and films. The mutagenic potential of dime...

Phthalate ester isomers, including dimethyl phthalate (DMP), dimethyl isophthalate (DMI) and dimethyl terephthalate (DMT), were found to be transformed by Rhodococcus rubber Sa isolated from a mangrove sediment using DMT as a carbon source initially. At a concentration of 80 mg l−1, transformati...

The alkaline hydrolysis of dimethyl terephthalate (DMT) in the presence of [LiAl2(OH)6]Cl has been investigated to demonstrate a possible application of anion exchange facility of layered double hydroxides (LDHs) to control chemical reactions. The results show that (i) in the alkaline hydrolysis...

The MS/MS spectrum of the metastable molecular ions of dimethyl terephthalate 1 features an unexpected, quite intense, loss of a methyl radical. Using a combination of mass spectrometry techniques, it is shown that this process consists of a pseudo simple cleavage reaction isomerizing, in the fi...

In this study the removal of basic dyes from aqueous solutions by residue acid mixture (RAM) obtained from dimethyl terephthalate distillation residue was investigated. Adsorption experiments were carried out at ambient temperature. A fixed amount of sample was immersed in 50 mL basic dye (500 m...

The binary solid–liquid equilibrium of Dimethyl Terephthalate (DMT), Dimethyl Isophthalate (DMI) and Dimethyl Phthalate (DMP) was investigated by experiment and differential scanning calorimetry (DSC). The result demonstrated DMT/DMI and DMT/DMP systems are eutectic while DMI/DMP is a solid-sol...

The dissociation of an in vivo isosafrole metabolite-cytochrome P-450 complex by a number of exogenous and endogenous compounds is described. The rate of dissociation is temperature-dependent, but the process does not require oxygen. Compounds which produce Type I (substrate) binding spectra wit...

isosafrole (1a) and isoeugenol methyl ether (1b), two closely related substrates, behave very differently when subjected to manganese porphyrins catalysed epoxidation by sodium hypochlorite. A possible explanation is given, in terms of an unusual competition between the epoxidation and the O-dea...

Isosafrole serves as an excellent inducing agent in rabbits for P-450LM4, the same isozyme as that which is induced by 3-methylcholanthrene and 5,6-benzoflavone. Since the isosafrole adduct formed with isozyme 4 is unstable, the uncomplexed cytochrome may be purified in very good yield (over 30%...

SummaryThe structural features which determine interaction of safrole and related methylenedioxyphenyl compounds with cytochromes P-450 or P-448, and determine the induction of these two classes of the cytochrome, have been studied.All methylenedioxyphenyl compounds studied interact with both cy...

SummaryIsosafrole induction of cytochrome P-450 was compared in congenic strains of C57BL/6J mice, one of which expresses normal levels of the Ah receptor [B6(Ahb)], and another that does not contain a measurable receptor concentration [B6(Ahd)]. Using sucrose gradient analysis of 2,3,7,8-tetrac...

Induction of cytochrome P450 1A (CYP1A) can be used as a biomarker of exposure to planar halogenated aromatic hydrocarbons (PHAHs). Our objective was to characterize the induction of CYP1A activity and protein in three avian species following in vivo treatment with β-naphthoflavone (BNF) and/or...

Ethoxyresorufin O-deethylation (EROD) has been used as a specific probe for CYP1A1 and CYP1A2. Selective inhibition of one of these cytochromes P450 may differentiate their activity in human liver. Four inhibitors were chosen to examine the selective inhibition of EROD activity, using cDNA of CY...

The electrocatalytic behavior of Ti/RuO2 and Ti/IrO2 electrodes was investigated as function of the supporting electrolyte and solvent. A decrease was observed in the electrochemically active area of the electrode as the cation size increases. The oxidation potential of a series of organic solve...