The aim of this study was to evaluate the chemical stability of diphenylcyclopropenone (DCP) in var- ious solvents. DCP is being used in topical therapy in patients with alopecia areata (AA). The solvents for DCP used so far were acetone, ethanol and propylene glycol. DCP is supposed to be an immune-modulating thera- peutic agent, however the studies on it's pharmacokinetics including chemical ...

To find out the prevalence of good knowledge, appropriate attitude and safe practice among printing workers exposed to organic solvents in Hong Kong, and to see if safe practice was influenced by the knowledge of and the attitude towards the harmful effects of organic solvents as well as other factors. The survey was conducted in a sample of 501 male printing workers from 28 factories in Hong K...

A cross-reactive colorimetric sensor array composed of solvatochromic dyes in semi-liquid matrices was used to successfully discriminate among eleven common solvents. The multidimensional array response is attributed to both chemical (i.e., analyte-dye interactions) and physical (i.e., spot blooming and refractive index alteration) changes in the sensor spot.

Ionic liquids, being composed entirely of ions, were once mainly of interest to electrochemists. Recently, however, it has become apparent that, inter alia, their lack of measurable vapor pressure characterizes them as green solvents, and that a wide range of chemical reactions (reviewed here) can be performed in them.

A kind of Gd@C82 salt, Gd@C82/TBPA, was prepared through chemical oxidation. The Gd@C82/TBPA salt was characterized as being paramagnetic with an effective magnetic moment of 9.68μB. The Gd@C82/TBPA salt dissolves in many organic solvents and its high solubility will make it more applicable for use as a magnetic material.

Various pharmacognostic parameters including macroscopy, microscopy, chemomicroscopy and behaviour of powdered drug on treatment with different chemical reagents were studied on the leaves of Bauhinia purpurea Linn. (Family Caesalpinaceae). Phytochemical screening of the plant part with various solvents revealed the presence of phenolic compounds, tannins, flavonoids, phytosterols, saponins and...

The four diastereoisomers of cyclo(-Asp-Val-) were synthesized to compare with a proposed structure of cairomycin A. Their antimicrobial activities were determined against both Gram-positive and Gram-negative bacteria. The physico-chemical properties of the isomers were characterized by mp, 1H NMR, IR, FAB-MS, and solubility in solvents, which were different from those reported for cairomycin A.

The (1)H-NMR shifts of the imidazolium protons of some novel dimeric ionic liquids were examined in various deuterated solvents. Interactions between the solvent and the imidazolium salt of butyl substituted ionic liquids were observed to give higher chemical shifts than methyl substitution.

HIGHLIGHTS The effects of different extraction methods/solvents on the plant's biological activity effect various chemical components plant Biological activities extracts from Analysis major phenolic compounds and in-silico ADMET prediction

Polymersomes are vesicular self-assemblies of amphiphilic diblock copolymers; they consist of a spherical compartment enclosed by amacromolecular bilayer and have great potential as encapsulation and release systems. They offer enhanced mechanical and structural stability as compared to vesicles made from phospholipids or detergents. By tailoring block lengths, block chemistry and functionaliza...