Results 21 to 30 of about 42,748 (282)

Determination of 2-Pentanol Enantiomers via Chiral GC-MS and Its Sensory Evaluation in Baijiu

open access: yesFoods, 2022
The enantiomeric contents of 2-pentanol of Baijiu were analyzed by liquid-liquid extraction (LLE) coupled with gas chromatography-mass spectrometry (GC-MS) using β-cyclodextrin as a chiral stationary phase.
Lisha Hu   +4 more
doaj   +1 more source

Differential Effects of Beta-Hydroxybutyrate Enantiomers on Induced Pluripotent Stem Derived Cardiac Myocyte Electrophysiology

open access: yesBiomolecules, 2022
Beta-hydroxybutyrate (βOHB), along with acetoacetate and acetone, are liver-produced ketone bodies that are increased after fasting or prolonged exercise as an alternative fuel source to glucose. βOHB, as the main circulating ketone body, is not only a G-
Matthew L. Klos   +7 more
doaj   +1 more source

Distribution and Quantification of 1,2-Propylene Glycol Enantiomers in Baijiu

open access: yesFoods, 2021
Enantiomers of 1,2-Propylene glycol (1,2-PG) were investigated in 64 commercial Chinese Baijiu including soy sauce aroma-type Baijiu (SSB), strong aroma-type Baijiu (STB), and light aroma-type Baijiu (LTB), via chiral gas chromatography (β-cyclodextrin).
Hao Xu   +4 more
doaj   +1 more source

Determination of the vildagliptin intermediate enantiomer by chiralce-columns

open access: yesJournal of Hebei University of Science and Technology, 2017
In order to establish a NP-HPLC method for the determination of enantiomer in vildagliptin intermediate, the determination is carried out on the column of ChiralpakAD-H(250 mm×4.6 mm, 5 μm), with the mobile phase of n-hexane, ethanol and methanol(volume ...
Weina LI, Jia HU, Mengyu ZHAI, Zibin GAO
doaj   +1 more source

Lipase Assisted (S)-Ketoprofen Resolution from Commercially Available Racemic Mixture

open access: yesPharmaceuticals, 2021
Ketoprofen is a commercially available drug sold as a racemic mixture that belongs to the family of non-steroidal anti-inflammatory drugs known as profens.
Daniela Estrada-Valenzuela   +5 more
doaj   +1 more source

Dexibuprofen Therapeutic Advances: Prodrugs and Nanotechnological Formulations

open access: yesPharmaceutics, 2021
S-(+) enantiomer of ibuprofen (IBU) dexibuprofen (DXI) is known to be more potent than its R-(−) form and exhibits many advantages over the racemic mixture of IBU such as lower toxicity, greater clinical efficacy, and lesser variability in therapeutic ...
Anna Gliszczyńska   +1 more
doaj   +1 more source

Disproportionation of enantiomers by precipitation [PDF]

open access: yesJournal of Molecular Evolution, 1974
The paper presents some experiments which were aimed at the demonstration of enrichment of enantiomer substances by precipitation from saturated racemic solutions. As a working hypothesis we searched for a possible very small “asymmetry effect” that might by observable during precipitation if the solubilities of enantiomer components were affected ...
openaire   +3 more sources

Two-Dimensional Hetero- to Homochiral Phase Transition from Dynamic Adsorption of Barbituric Acid Derivatives

open access: yesNanomaterials, 2023
Barbituric acid derivative (TDPT) is an achiral molecule, and its adsorption on a surface results in two opposite enantiomerically oriented motifs, namely TDPT-Sp and Rp. Two types of building blocks can be formed; block I is enantiomer-pure and is built
Fabien Silly   +3 more
doaj   +1 more source

The Enantiomers of Trinorbornane and Derivatives Thereof [PDF]

open access: yesHelvetica Chimica Acta, 2020
AbstractHerein, we report the synthesis of the enantiomers of trinorbornane, a tetracyclic saturated hydrocarbon with the chemical formula C11H16. The preparation of these rigid carbon scaffolds was enabled by the successful chiral separation of its tricyclic precursor, thus allowing the enantiomers to be synthesized through a reductive radical ...
Marcel Mayor   +4 more
openaire   +7 more sources

Ketamine: A tale of two enantiomers [PDF]

open access: yesJournal of Psychopharmacology, 2020
The discovery of the rapid antidepressant effects of the dissociative anaesthetic ketamine, an uncompetitive N-Methyl-D-Aspartate receptor antagonist, is arguably the most important breakthrough in depression research in the last 50 years. Ketamine remains an off-label treatment for treatment-resistant depression with factors that limit widespread use
Luke A Jelen   +4 more
openaire   +4 more sources

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