carvedilol is administered as a racemic mixture of the r(+)- and s(-)-enantiomers, although it was demonstrated that the two enantiomers exhibit different pharmacological effects and stereoselective pharmacokinetics. the aim of this study was the evaluation of several native and derivatized cyclodextrines as chiral selectors for the separation of carvedilol enantiomers. stereoselective interact...

in recent years there has been considerable interest in the synthesis and separation of enantiomers of organic compounds especially because of their importance in the biochemistry and pharmaceutical industry. high-performance liquid chromatography is a very useful method for the direct separation of enantiomers. however, about 30−40 years ago, commercially available chiral stationary phases wer...

CHIRALPAK QN-AX and QD-AX are anion exchanger chiral stationary phases providing specifi c enantioselectivity for acidic compounds. In this Application Note, we demonstrate that the application of these columns can be extended to supercritical fl uid chromatography (SFC) for enantiomer separation of acidic compounds. Using the advantages of the advanced technology of the Agilent 1260 Infi nity ...

Efficient resolution of racemates chiral molecules is great significance in the pharmaceutical, agrochemical, fragrances, and food additives industries. Emerging homochiral porous materials such as metal–organic frameworks, covalent-organic porous-organic cages, metal-organic cages with ultrahigh surface area, controllable pore chemistry ample recognition sites are promising for efficient resol...

Over the past fifteen to twenty years, the stereochemistry is gaining prime importance in pharmaceutical practice. As a result of advancement in chemical technologies associated with the synthesis, separation, identification and analysis of single enantiomer present in racemic compound, several chiral drugs are presented as single enantiomer for approval to regulatory authorities. Rather to int...

A simple and rapid chiral liquid chromatographic method was developed for the enantiomeric separation of Sertraline hydrochloride (cis-(1S, 4S)-4-(3, 4-dichlorophenyl)-N-methyl-1,2,3,4-tetrahydronaphthalen-1-amine hydrochloride) and its undesired cis-enantiomer (cis(1R, 4R)-4-(3, 4-dichlorophenyl)-N-methyl-1,2,3,4tetrahydronaphthalen-1-amine hydrochloride). Superior resolution between Sertralin...

BACKGROUND Malathion (R,S)-diethyl-2-[(dimethoxyphosphorothioyl)sulfanyl]butanedioate is a chiral organophosphorus compound used widely as pesticide for suppression of harmful insects such as mosquitoes. It is well known that in biological systems (R)-malathion is the active enantiomer, therefore a sustainable approach could be the use of only the biologically active enantiomer. The resolution ...