Results 81 to 90 of about 3,249 (212)

Monosaccharide-NAIM Derivatives for D-, L-Configurational Analysis

Molecules, 2011
The D-, L-enantiomeric pairs of common monosaccharides (xylose, ribose, rhamnose, arabinose, fucose, glucose, mannose, galactose, N-acetylgalactosamine, glucuronic acid and galacturonic acid) were derivatized with 2,3-naphthalenediamine to form the ...
Chunchi Lin, Chien-Yuan Kuo, Wen-Bin Yang, Kuo-Shiang Liao   +3 more
doaj   +1 more source

Multiple‐Use Microplate Assay for Submicromolar Ultra High‐Throughput Separation of Amines Based on their Degree of Substitution

ChemistryOpen, Volume 15, Issue 4, April 2026.
A reusable microplate platform for ultra‐high‐throughput, submicromolar separation of protonated amines – including alkyl‐, aryl‐, and aralkyl‐types – using a tris(pyridino)‐crown ether selector was introduced; the method enables rapid, zero‐energy, parallel purification fully compatible with automated synthesis workflows.
Panna Vezse, Tünde Tóth, Péter Huszthy, Ádám Golcs   +3 more
wiley   +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

Effectively enhancing the enantioseparation ability of β-cyclodextrin derivatives by de novo design and molecular modeling

, 2017
A novel strategy to improve the enantioseparation ability of β-cyclodextrin derivatives.
Linwei Li, Chengjun Wu, Zhen Li, Yang Ma, Tiemin Sun, Shuhao Zhou   +5 more
core   +1 more source

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
core  

A Novel Two-Step Liquid-Liquid Extraction Procedure Combined with Stationary Phase Immobilized Human Serum Albumin for the Chiral Separation of Cetirizine Enantiomers along with M and P Parabens

Molecules, 2016
The research into the separation of drug enantiomers is closely related to the safety and efficiency of the drugs. The aim of this study was to develop a simple and validated HPLC method to analyze cetirizine enantiomers.
Aleksandra Chmielewska, Lucyna Konieczna, Tomasz Bączek   +2 more
doaj   +1 more source

Effects of Rigid Conjugated Groups: Toward Improving Enantioseparation Performances of Chiral Porous Organic Polymers

, 2019
The construction of chiral porous materials for practical enantioseparation remains a great challenge. As chiral compounds might display a distinctive spatial orientation in diastereoisomeric complexes between enantiomers and selectors, we reasoned that ...
Huiling Tan (500089), Qibin Chen (1780639), Tingting Chen (111216), Honglai Liu (1425166)   +3 more
core   +1 more source

Retention Time Prediction for Chromatographic Enantioseparation by Quantile Geometry-enhanced Graph Neural Network

, 2022
A new research framework is proposed to incorporate machine learning techniques into the field of experimental chemistry to facilitate chromatographic enantioseparation.
Xu, Hao, Lin, Jinglong, Mo, Fanyang, Zhang, Dongxiao   +3 more
core  

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

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