Results 81 to 90 of about 4,646,169 (243)

Retrospective Study on the Power and Interpretation of Chiral Amphetamine Analysis in Hair for Forensic Applications

Drug Testing and Analysis, EarlyView.
A decision model for the interpretation of chiral amphetamine analysis in hair was established based on the enantiomeric fraction (EF) of (S)‐amphetamine in authentic hair samples. Two chiral analysis methods (indirect/direct) were consecutively applied to distinguish between illicit and therapeutic amphetamine use in forensic cases.
Liesl K. Janssens, Milena M. Madry, Andrea E. Steuer, Tina M. Binz   +3 more
wiley   +1 more source

Comparison of various chiral stationary phases for the chromatographic separation of chiral pharmaceuticals [PDF]

, 2009
Many pharmaceuticals contain active ingredients that have more than one stereoisomer. An important concern is the recognition that these different stereoisomers do not necessarily have identical, or even desirable biological activity.
Layton, Sherry E., NC DOCKS at The University of North Carolina Wilmington   +1 more
core  

Synthesis of a New Chiral Selector Base on Pracoterol for Chiral Stationary Phase

, 2011
According to the chiral resolution mechanism and structures of Pirkle’s chiral stationary phase (CSP), a new amide chiral selector base on pracoterol has been prepared in this thesis.
Hao Zeng, Shun Yao, Yi Wen Zhang, Hang Song   +3 more
core   +1 more source

Next‐Generation Carbon‐Based Anodes for Alkali Metal‐Ion Batteries: Recent Progress on Biphenylene and Emerging Materials

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Recent advances in carbon‐based anodes for alkali metal‐ion batteries are critically reviewed, with emphasis on biphenylene and other emerging carbon allotropes. Biphenylene exhibits exceptional theoretical electrochemical properties beyond conventional graphite, highlighting its strong potential as a next‐generation anode material once scalable ...
Adewale Hammed Pasanaje, Nirpendra Singh
wiley   +1 more source

Synthesis and characteristics of the human serum albumin-triazine chiral stationary phase

, 2000
Human serum albumin (HSA) was successfully bonded to silica with s-triazine as activator. The coupling reaction by this method was rapid and effective. The triazine-activated silica is relatively stable and can be installed for at least 1 month without ...
Zou, HF, Luo, QZ, Zhang, Q, Chen, XM, Ni, JY, Wang, HL, Jianyi Ni, Qiang Zhang, Hanfa Zou, Xiaoming Chen, Quanzhou Luo, Hailin Wang   +11 more
core   +1 more source

[Preparation of porous organic cage and its use as chiral stationary phase for capillary electrochromatography]. [PDF]

Se Pu, 2023
Zheng KN, Qin GZ, Jiang XF, Zhang JH, Yuan LM.   +4 more
europepmc   +1 more source

Helical Dinaphthothiophenes Reveal the Limits of BN‐Based Optical Tuning

European Journal of Organic Chemistry, EarlyView.
A BN‐7‐thia[5]helicene and an analogous CC‐7‐thia[5]helicene were prepared in two efficient synthetic routes. Their geometrical structures barely differ, which allows us to judge the influence of the BN substitution on the electronic properties. The formal substitution of carbon–carbon (CC) units by boron–nitrogen (BN) units is an established strategy ...
Yannik Appiarius, Noah Wolf, Pim Puylaert, Sourabh Kumar, Delia Miguel, Martin Molkenthin, Tim Neudecker, Anne Staubitz   +7 more
wiley   +1 more source

Enantiomerization barriers by dynamic HPLC. Stationary phase effects

, 1997
Chiral atropisomeric naphthamides have been used as model compounds to investigate solute interconversion phenomena in free solution and during liquid chromatography on a chiral stationary phase; energy barriers measured in the mobile phase (thermal ...
PIERINI, MARCO, GASPARRINI, Francesco, VILLANI, Claudio, MISITI, Domenico   +3 more
core   +1 more source

Separation of 4-substituted 5-methylpiracetam stereoisomers on polysaccharide-based chiral stationary phases

Journal of Chromatography Open
Monitoring of stereoisomer content in samples containing chiral compounds with multiple chiral centers is an important and challenging task in chiral liquid chromatography.
H. Kažoka, B. Turovska, T. Upmanis
doaj   +1 more source

l-Cysteine modified metal-organic framework as a chiral stationary phase for enantioseparation by capillary electrochromatography. [PDF]

RSC Adv, 2022
Lidi G, Xingfang H, Shili Q, Hongtao C, Xuan Z, Bingbing W.   +5 more
europepmc   +1 more source