نتایج جستجو برای: chiral separation

تعداد نتایج: 159363  

Journal: :Electrophoresis 2005
Belén Gómara Carmen García-Ruiz María Luisa Marina

3-(4-Methylbenzylidene)-camphor (MBC) is a chiral sunscreen agent used in cosmetic products. In this work, the enantioseparation of MBC has been performed by EKC and applied to the analysis of the MBC enantiomers in cosmetic creams. Different experimental conditions (type and concentration of the chiral selector, temperature, and sample solvent) have been optimized. Due to the neutral nature of...

Journal: :Comput. Meth. in Appl. Math. 2015
Stefan Burger Thomas Franke Thomas Fraunholz Ronald H. W. Hoppe Malte A. Peter Achim Wixforth

Enantiomers are chiral objects which di er by their orientation and are thus referred to as lefthanded and right-handed enantiomers. In applications they mostly occur as so-called racemic compounds consisting of approximately the same amount of leftand right-handed species which may have completely di erent properties. Hence, the separation of leftfrom right-handed enantiomers is an important i...

Journal: :Analytical sciences : the international journal of the Japan Society for Analytical Chemistry 2006
Sang Hyun Kwon Yoshio Okamoto Chiyo Yamamoto Wonjo Cheong Myeonghee Moon Jung Hag Park

Porous zirconia particles are very robust material and have received considerable attention as a stationary phase support for HPLC. We prepared cellulose dimethylphenylcarbamate-bonded carbon-clad zirconia (CDMPCCZ) as a chiral stationary phase (CSP) for separation of enantiomers of a set of 14 racemic compounds in normal phase (NP) and reversed-phase (RP) liquid chromatography. Retention and e...

Journal: :Soft Matter 2021

The interplay between chiral motion and dipolar interactions leads to intriguing collective behavior, including percolation, phase separation, emergent vortices, flocking transition.

Journal: :Journal of chromatography. A 2008
Chieu D Tran Irena Mejac

A chiral ionic liquid (IL), S-[3-(chloro-2-hydroxypropyl)trimethylammonium] [bis((trifluoromethyl)sulfonyl)amide] (S-[CHTA](+)[Tf(2)N](-)), which can be easily and readily synthesized in a one-step process from commercially available reagents, can be successfully used both as co-electrolyte and as a chiral selector for CE. A variety of pharmaceutical products including atenolol, propranolol, wa...

2015
Pu Wang Qinghua Zhang Yingming Li Chaofei Zhu Zhaojing Chen Shucheng Zheng Huizhong Sun Yong Liang Guibin Jiang

In the original version of this Article, Affiliation 2 was omitted for Qinghua Zhang. In addition, there were typographical errors. In the Results section under subheading 'Chromatographic separation' " The peak resolution factors (R s) of these chiral compounds were generally high than 1 except for PCB-174 and-83 " now reads: " The peak resolution factors (R s) of these chiral compounds were g...

Journal: :Journal of pharmaceutical and biomedical analysis 2006
G L Erny A Cifuentes

Determination of the chiral composition of drugs is nowadays a key step in order to determine purity, activity, bioavailability, biodegradation, etc., of pharmaceuticals. In this article, works published for the last 5 years on the analysis of chiral drugs by liquid separation techniques coupled with mass spectrometry are reviewed. Namely, chiral analysis of pharmaceuticals including, e.g., ant...

2011
Antti Gynther Karl Landsteiner Francisco Pena-Benitez Anton Rebhan

We calculate anomaly induced conductivities from a holographic gauge theory model using Kubo formulas, making a clear conceptual distinction between thermodynamic state variables such as chemical potentials and external background fields. This allows us to pinpoint ambiguities in previous holographic calculations of the chiral magnetic conductivity. We also calculate the corresponding anomalous...

Journal: :Chemical communications 2012
Srinivas Banala Roland G Huber Thomas Müller Martin Fechtel Klaus R Liedl Bernhard Kräutler

A hexafullereno-diporphyrinoid was obtained in a sequence of cycloaddition steps using porphyrins programmed for [4+2]-cycloaddition reactions and C(60)-fullerene.

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