Results 191 to 200 of about 4,646,169 (243)
Recent Progress of Chiral Monolithic Stationary Phases in CEC and Capillary LC
Electrophoresis, 2010 As the development of monolithic stationary phases in CEC and capillary LC, the monoliths specifically related with the enantioseparations taking the advantages of monolithic stationary phases have attracted increased research interest in this field ...
Minghuo Wu, Zhenbin Zhang, Ren'an Wu
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Chiral stationary phases on a crystalline support
Mikrochimica Acta, 1996For direct HPLC resolution of enantiomers of optically active substances, supports having an optically pure organic layer with a high order of chirality are advantageous. To ensure this, the support itself has to possess a structure of well-defined regularity. For this reason, zeolite A, a material of crystalline character has been used as support, for
Lujza P. Szab� +2 more
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Effects of temperature on retention of chiral compounds on a ristocetin A chiral stationary phase
Journal of Chromatography A, 2002The isocratic retention of enantiomers of chiral analytes, i.e. tryptophan, 1,2,3,4-tetrahydroisoquinoline and gamma-butyrolac tone analogs, was studied on a ristocetin A chiral stationary phase at different temperatures and with different mobile phase compositions, using the reversed-phase, polar-organic and normal-phase modes.
Antal, Péter +2 more
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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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