Chitinases are hydrolases capable of hydrolyzing the abundant natural polysaccharide chitin. Next to artificial fluorescent substrates, more physiological chito-oligomers are commonly used in chitinase assays. Analysis of chito-oligosaccharides products is generally accomplished by UV detection....

Effect of solvents, buffer solutions of different pH and β-cyclodextrin (β-CD) on the absorption and fluorescence spectra of 2-aminobenzoic acid (2ABA) have been investigated. The inclusion complex of 2ABA with β-CD is discussed by semiempirical quantum calculations (AM1), absorption, emissio...

Gel electrophoresis of fluorophore labeled saccharides provides a rapid and reliable method to screen enzymatic and/or chemical treatments of polysaccharides and glycoconjugates, as well as a sensitive and efficient microscale method to separate and purify oligosaccharides for further analysis. ...

A one-pot three-component synthesis of 6-aryl-8H-dibenzo[d,h][1,3,7,2]dioxazaborecin-8-ones is described. A mixture of 2-aminobenzoic acid, 2-hydroxybenzaldehyde, and arylboronic acid undergo a 1:1:1 addition reaction in CCl4 under microwave irradiation to produce bridgehead bicyclo[4.4.0]boron ...

N-glycans of therapeutic glycoproteins are critical quality attributes that should be monitored throughout all stages of biopharmaceutical development. To reduce both the time for sample preparation and the variations in analytical results, we have developed an N-glycan analysis method that incl...

This paper presents a methodology of oxidative cascade cyclisation of 2-aminobenzoic acids and arylaldehyde using I2 as a catalyst and an environmentally benign oxidant oxone. This method displays facile access to a diverse range of substituted aryl 4H-3,1-benzoxazin-4-ones. This synthetic metho...

The vibrational spectra of Pr3+ and Nd3+: o-clorobenzoic acid in solid state in the region 800-200 cm-1 have been recorded. About 24 bands have been observed. They have been assigned.

Manganyl [Mn(V)O] complexes have garnered considerable attention over the past 15 years as the reactive species in asymmetric olefin epoxidation, as catalysts for green chemistry and as possible intermediates in photosynthetic water oxidation chemistry. One method of preparing Mn(V)O complex...

Two complexes with benzoic acid (BA) and 4-chlorobenzoic acid (CBA) as ligands and trivalent erbium ion as central ion, [Er2(BA)6(DMF)2(H2O)2], DMF = N, N-dimethylformamide, C3H7NO, (Er-BA) (1) and [Er2(CBA)6(DMF)2(H2O)2] (Er-CBA) (2), have been synthesized by hydrothermal method. The complexes ...

Carboxylic acid and phenol moiety containing carbon materials are proven to catalyze cellulose hydrolysis. Experiments utilizing benzoic acid and substituted derivatives as model catalysts revealed that vicinal oxygenated group containing catalysts showed significantly higher activities regardle...

The comparative study on titanium dioxide (TiO2) catalyzed photocatalytic degradation (PCD) of aqueous aromatic carboxylic acids (phthalic acid, o-nitrobenzoic acid, o-chlorobenzoic acid and benzoic acid) was carried out in the presence of UV radiation using air. The TiO2 catalyst, synthesized b...

The solubilisation constants (Ks) of 4-chlorobenzoic acid in aqueous solutions of various pure and mixed surfactants are determined by the UV–Vis spectrophotometric method. And the dependence of the Ks values on temperature has been measured and thermodynamic parameters are calculated to analys...

The aqueous solubilities of o- and p-chlorobenzoic acids (CBAs) in different concentrations of sodium butyl monoglycol sulphate (NaBMGS) solutions at 25 and 45°C are determined by the weight disappearance method. The precipitation of o- or p-CBA by dilution with water from their single componen...

:A gas sensor has been fabricated by depositing the thin film of Functionalized Graphene Oxide (GO) using Langmuir Blodget (LB) technique on SiO2/Si wafers. Aluminum (Al) contacts were deposited using thermal evaporation technique for measuring the resistance of fabricated thin film. Three diffe...

Sulfuric acid and aromatic compounds are abundant in the atmosphere and play an important role in aerosol nucleation and growth. The main objective of this work is to provide molecular level description of pre-nucleation clusters formed by these species. Our approach is based on size- and compos...

The inhibition kinetics of alkylbenzoic acids on the diphenolase activity of mushroom tyrosinase have been investigated. The results show that the alkylbenzoic acids assayed can lead to reversible inhibition of the enzyme; furthermore, o-toluic acid and m-toluic acid are mixed-type inhibitors an...

The chromatographic fingerprints of industrial o-toluic acid, m-toluic acid and p-toluic acid have been established by HPLC-UV detection according to their impurity groups. HPLC separation of all relative substances involved in the groups was developed on a Kromasil C18 column by using methanol–...

The diastereoselective hydrogenation of two o-toluic acid derivatives, N-(2-methyl-benzoyl)-(S)-proline methyl ester here named substrate 1, and N-(2-methyl-benzoyl)-(S)-pyroglutamic acid methyl ester abbreviated as substrate 1′, was studied on metallic ruthenium particles deposited on two oxid...

Catalytic diastereoselective hydrogenation of o-toluic and 2-methyl nicotinic acids covalently bound to various chiral auxiliaries was carried out in a three-phase slurry reactor and followed in real time by means of in situ Fourier transform infrared/attenuated total reflection (FTIR/ATR) spect...

Separation of 3-nitro-o-toluic acid from its isomeric mixtures has essential significance in industry. In this work, by using isothermal saturation method, the solid-liquid equilibrium for 3-nitro-o-toluic acid in nine organic solvents (acetonitrile, methanol, ethanol, n-propanol, isopropanol, e...