the electrochemical oxidation of methyl catechol in the presence of 2-thiouracil (as a nucleophile) has beenperformed in aqueous solutions using cyclic voltammetry and controlled-potential coulometric techniques.the electrochemical behavior of methyl catechol in the presence of 2-thiouracil was investigated. theelectrochemical synthesis of this compound has been successfully performed in an und...

Catechol 2, 3-Dioxygenase transforms catechol by meta cleavage to 2hydroxymuconate semialdehyde. The meta pathway is functional in the microbial degradation of phenol and many such organic compounds. In the present study an attempt was made to isolate and purify catechol 2, 3dioxygenase from a phenol degrading Alcaligenes sp d2. The enzyme in the culture extract was precipitated at 80% ammonium...

The stability of the catechol-specific fl-adrenergic receptor of turkey erythrocytes was tested with certain physical and chemical agents. The receptor for the catechol function was stable at high temperatures or to treatment with ultrasound. Phospholipase, Pronase, trypsin, Triton X-100, sodium lauryl sulfate, or Lubrol-PX destroyed the catecholamine-sensitive adenylate cyclase but not catecho...

The studies were made using cyclic voltammetry on a glassy carbon electrode in aqueous solution containing phosphate buffer solution as supporting electrolyte. The purpose of the investigation was to carry out a quantitative detailed study of the electrochemical oxidation of catechol in the presence of 4, 4-bipyridine in aqueous solution. The electrooxidation of catechol produces a very reactiv...

Electron spin resonance spectroscopy has been used to detect, characterize, and to infer structures of o-semiquinones derived from stilbene catechol estrogens. Radicals were generated enzymatically using tyrosinase and were detected as their Mg2+ complexes. It is suggested that initial hydroxylation of stilbene estrogen gives a catechol estrogen in situ; subsequent two-electron oxidation of the...

Metabolic profiling was used to investigate the molecular phenotypes of a transgenic Populus tremula x P. alba hybrid expressing the nahG transgene, a bacterial gene encoding salicylate hydroxylase that converts salicylic acid to catechol. Despite the efficacy of this transgenic approach to reduce salicylic acid levels in other model systems and thereby elucidate roles for salicylic acid in pla...

The adsorption of catechol (1,2-dihydroxybenzene) on graphene nanoplatelets (GNPs) is investigated electrochemically and spectroscopically. The reversible adsorption of catechol on GNPs is Langmuirian with an adsorption constant of (0.2 ± 0.002) mM-1 at low adsorbate concentrations (≤100 mM). At higher concentrations (>100 mM) the adsorption of catechol on GNPs is shown to undergo a flat to ver...

The inhibition of fibril formation of amyloid beta proteins (A beta) would be attractive therapeutic targets for the treatment of Alzheimer's disease (AD). Dopamine (DA) and other catechol derivatives were used as inhibitory factors for A beta fibril formation. The fibril formation of A beta was monitored by Thioflavin T fluorescence, a transmission electron microscopy (TEM) and a total interna...