Results 81 to 90 of about 3,397 (210)

Derivatisation procedures for the chromatographic enantioseparation of fexofenadine hydrochloride

, 2003
The paper describes two different pre-column derivatisation procedures for the chromatographic enantioseparation of fexofenadine ...
FERIOLI, Valeria, GAMBERINI, Gianfranco, RUSTICHELLI, Cecilia   +2 more
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Enantioseparation performance of CNTs as chiral selectors for the separation of ibuprofen isomers: a dispersion corrected DFT study

, 2017
The enantioseparation of chiral drugs has been of great interest in the modern pharmaceutical industry since the majority of bioorganic compounds are chiral.
Heshmatollah Alinezhad, Mahmood Tajbakhsh, Elham Soleymani, Masoud Darvish Ganji   +3 more
core   +1 more source

Application of Biotechnology and Chiral Technology Methods in the Production of Ectoine Enantiomers

Applied Sciences
Natural ectoine, (+)-(4S)-2-methyl-1,4,5,6-tetrahydropyrimidine-4-carboxylic acid, is an extremely important small biomolecule belonging to the class of osmolytic/osmoprotective compounds.
Marcela Šišić, Mladenka Jurin, Ana Šimatović, Dušica Vujaklija, Andreja Jakas, Marin Roje   +5 more
doaj   +1 more source

Nanocellulose Derivative/Silica Hybrid Core-Shell Chiral Stationary Phase: Preparation and Enantioseparation Performance

Molecules, 2016
Core-shell silica microspheres with a nanocellulose derivative in the hybrid shell were successfully prepared as a chiral stationary phase by a layer-by-layer self-assembly method.
Xiaoli Zhang, Litao Wang, Shuqing Dong, Xia Zhang, Qi Wu, Liang Zhao, Yanping Shi   +6 more
doaj   +1 more source

Synthesis of Optically Active Poly(diphenylacetylene)s Using Polymer Reactions and an Evaluation of Their Chiral Recognition Abilities as Chiral Stationary Phases for HPLC

Molecules, 2016
A series of optically active poly(diphenylacetylene) derivatives bearing a chiral substituent (poly-2S) or chiral and achiral substituents (poly-(2Sx-co-31−x)) on all of their pendant phenyl rings were synthesized by the reaction of poly(bis(4 ...
Katsuhiro Maeda, Miyuki Maruta, Yuki Sakai, Tomoyuki Ikai, Shigeyoshi Kanoh   +4 more
doaj   +1 more source

Optimization of the HPLC enantioseparation of 3,3’-dibromo-5,5’-disubstituted-4,4’-bipyridines using immobilized polysaccharide-based chiral stationary phases

, 2013
The HPLC enantioseparation of nine atropisomeric 3,3,5,5-tetrasubstituted-4,4- bipyridines was performed in normal and polar organic (PO) phase modes using two immobilized polysaccharide-based chiral columns, namely, Chiralpak IA and Chiralpak IC. The
Aubert, Emmanuel, Peluso, Paola, COSSU, Sergio Antonio, Paola Peluso, Sergio Cossu, Victor Mamane, Mamane, Victor, Emmanuel Aubert, Cossu, Sergio, Cossu S, Peluso P, Mamane V, Aubert E   +12 more
core   +1 more source

Improvement of electrophoretic enantioseparation of amlodipine by polybrene.

Iranian journal of pharmaceutical research : IJPR, 2012
In chiral and non-chiral electrophoretic resolution of basic drugs, adsorption of analytes to negatively charged capillary wall could lead to poor repeatability of migration time and peak area. In addition, chiral resolutions of basic drugs are commonly performed in low pH buffers.
Zandkarimi, Majid, Shafaati, Alireza, Foroutan, Sayyed Mohsen, Lucy, Charles A.   +3 more
openaire   +2 more sources

Enantioseparation on monolithic molecularly imprinted polymers

, 2006
Among the well known techniques for enantioseparation, lately the MIPs have been proven as an attractive way to obtain pure optically active components.
Seidel-Morgenstern, A., Seebach, A.
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HPLC and SFC Enantioseparation of (±)-Trans-β-Lactam Ureas on Immobilized Polysaccharide-Based Chiral Stationary Phases—The Introduction of Dimethyl Carbonate as an Organic Modifier in SFC

Separations
A series of nine racemic trans-β-lactam ureas were analyzed for enantiomer separation by high-performance liquid chromatography (HPLC) and supercritical fluid chromatography (SFC).
Mladenka Jurin, Darko Kontrec, Marin Roje   +2 more
doaj   +1 more source

Crystallization of enantiomers : from the phase diagram to crystallization based enantioseparation

, 2007
Often it is not recognized that crystallization methods can be applied for enantioseparation purposes. Thus, the intention of this lecture is to present and to discuss several aspects relevant to derive the feasibility of crystallization based ...
Lorenz, H.
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