JBCS

The atomic charges of carbon monoxide from some of the most used charge models. With the exception of generalized atomic polar tensor (GAPT), they all agree well with the almost null dipole moment. We would rather buy quantum theory of atoms in molecules (QTAIM). It's more expensive but works well.

Sample of blotter paper seized in the streets of Bogotá, analyzed by gas chromatography coupled to a selective mass ion trap detector (GC-MS IT) containing three different synthetic drugs.

Oxidative desulfurization (ODS) of gasoline by ionic liquids (ILs) coupled with extraction by organic solvents is a potential method to produce clean gasoline.

A novel picolinic acid-12-molybdophosphoric acid hybrid complex was prepared and characterized. The complex was demonstrated to be a highly efficient and reusable solid-liquid heterogeneous catalyst for esterification.

Jarosite-type compounds can undergo several kinds of substitutions thanks to the different coordination environments in their structure; many of those substitutions can be made by elements of environmental importance, such as chromium(VI). Furthermore, they possess high stability in a wide range of pH and temperature, so they could be excellent deposits of toxic elements.

Lead isotopic composition was applied as a tool to differentiate among Brazilian red wine origin. The results have demonstrate that is possible to discriminate between wines produced on the Southern region from those produced on Vale do Sao Francisco.

The cyclopalladated complexes showed leishmanicidal and trypanocidal activities. [Pd(dmba)(μ-NCO)]₂ showed to be the most active compound against Leishmania amazonensis and Trypanosoma cruzi intracellular amastigote forms.

A self-assembled monolayer of cysteine bound monoclonal antibodies was used to build an immunosensor for aflatoxin B₁ detection in rice.

New compound (+)-(6R*,7S*,8R*)-6,7,8-trihydroxy-2,2-dimethyl-5,6,7,8-tetrahydro-chroman-4-one isolated from Anthostomella brabeji.

Phenolic compounds are responsible for the colors and flavors of wines, and their presence has been associated with some beneficial effects on human health. In this work chromatographic methods were used for the determination of phenolic acids in wines produced from the Sao Francisco region, Brazil, which is in the boundary between Bahia and Pernambuco States.

The turnover frequency (TOF) of amyl anthraquinone showed antipathetic size dependence. The space time yield (STY) of hydrogen peroxide peaked at 4 nm.

This paper describes the use of digital imaging acquired from a conventional desktop scanner for characterization of newly synthesized amino-nitroquinoxaline dyes through their color change signatures.

Schematic reaction of cardanol with diethyl azodicarboxylate to form one of the ene reaction products.

Desmodesmus sp. microalgae cultivation leads to high biomass production. Different pigment extraction methods from the microalgae cells were tested. Chromatographic identification and quantification from pigments extract revealed the major carotenoids in different extraction methods.

A TiO₂/Zn(II) phthalocyanine nanocomposite () showed to be up to 15% better than TiO₂-P25 () in promoting the mineralization of paracetamol. For both photocatalysts the mineralization is affected by pH of the reaction medium with maximum efficiency nearby their isoelectric points.

Hexanitrohexaazaisowurtzitane (CL-20), the most energetic explosive known to date, has been synthesized through a one-pot nitrolysis reaction using zeolite/HNO₃.The optimization of reaction parameters has been studied.

Thiazinanones from 2-morpholinoethylamine were obtained by thermal heating and sonochemistry methodologies.

Chiral separation of sibutramine enantiomers by capillary zone electrohoresis using cyclodextrins as chiral selectors.

A microwave-assisted reaction allows the isolation of propacetamol hydrochloride in high purity and yield. Mass spectrometry was used to evaluate an active pharmaceutical ingredient (API) microsomal reaction.

A new and easy methodology for esterification and amidation of carboxylic acids promoted by triphenylphosphine and tribromoisocyanuric acid.