Results 41 to 50 of about 691,764 (293)
Geophysical Research Letters, 2022 Amino acids are important targets in the search for life beyond Earth. The types of amino acids, their relative abundances, and enantiomeric excess all serve as biosignatures.
Zuzana Cieslarova +3 more
doaj +1 more source
Cannabis through the looking glass: chemo- and enantio-selective separation of phytocannabinoids by enantioselective ultra high performance supercritical fluid chromatography [PDF]
, 2017 By using the Inverted Chirality Columns Approach (ICCA) we have developed an enantioselective UHPSFC method to determine the enantiomeric excess (ee) of (-)-Δ(9)-THC in medicinal marijuana (Bedrocan®).
Cavazzini, A +7 more
core +2 more sources
Solubility of chiral species as function of the enantiomeric excess [PDF]
Journal of Pharmacy and Pharmacology, 2015 Abstract The solubility of racemizable and nonracemizable chiral species is discussed in terms of: enantiomeric excess, nature of solvent and the solid phases, which are in equilibrium with a saturated solution. Stable and metastable equilibria are contemplated by an extensive used of phase diagrams.
G. Coquerel
semanticscholar +4 more sources
Journal of Pharmaceutical Analysis, 2016 A simple analytical high-performance liquid chromatography (HPLC) method was applied for the enantiomeric excess determination of esomeprazole ((S)-OME), the enantiopure active ingredient contained in drug products, in the presence of its potential ...
Bruno Gallinella +5 more
doaj +1 more source
Uni-directional polymerization leading to homochirality in the RNA world [PDF]
, 2005 The differences between uni-directional and bi-directional polymerization are considered. The uni-directional case is discussed in the framework of the RNA world. Similar to earlier models of this type, where polymerization was assumed to proceed in a bi-
Andersen, A. C. +3 more
core +2 more sources
Discovery of (S)-3′-hydroxyblebbistatin and (S)-3′-aminoblebbistatin : polar myosin II inhibitors with superior research tool properties [PDF]
, 2017 In search of myosin II inhibitors with superior research tool properties, a chemical optimization campaign of the blebbistatin scaffold was conducted in this paper. (S)-Blebbistatin is the best known small-molecule inhibitor of myosin II ATPase activity.
Bracke, Marc +6 more
core +1 more source
BIO Web of Conferences, 2014 What is the role played by amino acids in the chemistry of the interstellar medium and the emergence of life on the early Earth? Are they really the primary key compounds as free amino acids?
Guillemin J-C.
doaj +1 more source
MATEC Web of Conferences, 2015 A systematic theoretical derivation of bioresolution-inversion process was made. An equation was derived between the maximum ee value of final product (eef(max)) and enantiomeric ratio (E) of a reaction. The corresponding equations of conv.(max), eep(max)
Xu Yi, Zhou Dan, Chen Jianbo
doaj +1 more source
Determination of enantiomeric excess in amine derivatives with molecular self-assemblies. [PDF]
Angewandte Chemie, 2015 AbstractWe report the first fluorescence‐based assay for the rapid determination of the ee value of amines, amino alcohols, and amino acid esters. The method uses the self‐assembly of 2‐formylphenylboronic acid with a chiral diol and a chiral amine or derivatives (of unknown chirality) to produce two diastereomeric iminoboronates that differ in their ...
Elena G. Shcherbakova +4 more
semanticscholar +3 more sources
Total Chiral Symmetry Breaking during Crystallization: Who needs a "Mother Crystal"? [PDF]
, 2005 Processes that can produce states of broken chiral symmetry are of particular interest to physics, chemistry and biology. Chiral symmetry breaking during crystallization of sodium chlorate occurs via the production of secondary crystals of the same ...
Cristobal Viedma +7 more
core +3 more sources