Results 141 to 150 of about 1,667,790 (189)
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Monolithic chiral stationary phases for liquid‐phase enantioseparation techniques
Journal of Separation Science, 2010AbstractThis short overview summarizes the development in the field of enantioselective monolithic chromatographic media and their application for pressure‐driven and electrokinetic separations. The major emphasis is put on the currently existing problems and the author's vision for their solution is provided.
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Journal of Chromatography B: Biomedical Sciences and Applications, 2000
Improved chiral selectivity was observed for numerous compounds when vancomycin was added to the mobile phase on a Chirobiotic-V column. This chiral mobile phase additive (CMPA) is the same chiral selector as that bonded to the stationary phase of this Chirobiotic-V column.
Q, Sun, S V, Olesik
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Improved chiral selectivity was observed for numerous compounds when vancomycin was added to the mobile phase on a Chirobiotic-V column. This chiral mobile phase additive (CMPA) is the same chiral selector as that bonded to the stationary phase of this Chirobiotic-V column.
Q, Sun, S V, Olesik
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Solute-Stationary Phase Interaction in Chiral Chromatography.
Advances in chromatography, 2016.
Asnin, Leonid D. +2 more
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Chiral Ionic Liquids as Stationary Phases in Gas Chromatography
Analytical Chemistry, 2004Recently, it has been found that room-temperature ionic liquids can be used as stable, unusual selectivity stationary phases. They show "dual nature" properties, in that they separate nonpolar compounds as if they are nonpolar stationary phases and separate polar compounds as if they are polar stationary phases.
Jie, Ding +2 more
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Gas Chromatography of Organophosphorus Compounds on Chiral Stationary Phases
International Journal of Environmental Analytical Chemistry, 1987Abstract The gas chromatographic separation of the stereoisomers of several chiral organophosphorus compounds is described. Glass capillary columns coated with the non-chiral phases SE-30 and Carbowax 20M, or with the chiral phases Chirasil-Val and Ni(II)Bis[(1R)-3-(heptafluorobutyryl)camphorate] were used.
Degenhardt, C.E.A.M. +2 more
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Streptavidin chiral stationary phase for the separation of adenosine enantiomers
Journal of Chromatography A, 2004In this paper, a microbore column packed with streptavidin particles was used, at various temperatures (0-24 degrees C), to separate the adenosine enantiomers by HPLC. Using an aqueous mobile phase, the apparent enantioseparation was high for a small molecule, varying from 11.5 at 0 degrees C to 6.2 at 24 degrees C.
Corinne, Ravelet +5 more
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Enantioseparation behavior of chiral stationary phases AD, AS and OD
Chinese Journal of Chromatography, 2016Over the past decades, HPLC enantioseparation with chiral stationary phases (CSPs) has been widely applied in chiral analysis and preparation of new pharmaceuticals, pesticides, food, etc. Herein, enantioseparation of 20 chiral compounds have been carried out on three polysaccharide-based CSPs (EnantioPak AD, AS and OD) with normal phases by HPLC ...
Liqun, Li +6 more
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Chiral stationary phases in HPLC for the stereoselective determination of methadone
Chirality, 1999An extensive study of the behavior of three chiral stationary phases (CSP) is presented for the stereoselective determination of methadone. The following chromatographic columns were selected: a cellulose, Chiralcel OJ; a modified cyclodextrin. Cyclobond I 2000 RSP, and a protein, Chiral-AGP.
Rudaz, Serge, Veuthey, Jean-Luc
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Derivatized vancomycin stationary phases for LC chiral separations
Talanta, 1996In this work, synthetic and natural chiral selectors were combined to form two different chiral stationary phases (CSPs). These were made by bonding R- or S-(1-naphthylethyl) carbamate (R-NEC or S-NEC)-derivatized vancomycin molecules to a silica gel support. The two CSPs were evaluated using a set of 60 enantiomeric pairs. The results were compared to
A, Berthod +3 more
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HPLC Enantioseparation on Cyclodextrin-Based Chiral Stationary Phases
2012Cyclodextrin-bonded silica material is one of the most commonly used chiral stationary phases in liquid chromatography for pharmaceutical analysis and enantioseparations. The approaches for immobilization of cyclodextrins onto the silica surface influence both, the stability of the chiral stationary phase and the enantioselectivity. In this chapter, we
Yong, Wang, Siu Choon, Ng
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