Results 31 to 40 of about 13,993 (189)
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to evaluate 61 flavouring substances in the Flavouring Group Evaluation 10, Revision 2, using the Procedure in Commission ...
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj +1 more source
E/Z Isomerism Without a Double Bond – an Unusual Type of Stereoisomerism, and an Unprecedented Isomerisation in a Bicyclobutane [PDF]
An unusual kind of stereoisomerism termed E/Z isomerism without a double bond or generalised E/Z isomerism is discussed for the first time. Examples are given of pairs of synthesized and separated compounds related by this kind of isomerism (4a/5a and ...
Haftstein, Gunter, Rücker, Christoph
core
The unique monomer and excimer fluorescence emissions of pyrene were first exploited as distinctly photophysical signals to identify the possible diastereomers of guests within nor-seco-cucurbit[10]uril (NS-CB[10]) cavities.
Xiaodong Zhang +3 more
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Five out of eight human glutathione peroxidases (GPXs) are selenoproteins, representing proteins that contain selenium as part of the amino acid selenocysteine. The GPXs are important for reducing hydroperoxides in a glutathione-consuming manner and thus
Maria Schwarz +7 more
doaj +1 more source
In the present study, two sugar-based perylenediimide derivatives (PDIs) substituted at the imide positions with carbohydrate groups were synthesized to investigate the impact of the stereoisomerism of the sugar on the aggregation morphology and ...
Zhijian Huang (1649578) +4 more
core +1 more source
Taming T-REX: a canonical language for geometry-aware generative design of transition-metal complexes [PDF]
Canonical string representations have transformed organic cheminformatics, yet transition-metal complexes (TMCs) lack an equivalent that captures coordination geometry, stereochemistry, and donor topology.
Ilia Kevlishvili, Devmin Dorabawila
doaj +1 more source
Scientific Opinion on Flavouring Group Evaluation 82, Revision 1 (FGE.82Rev1): Consideration of Epoxides evaluated by the JECFA (65th meeting) [PDF]
The Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids of the European Food Safety Authority was requested to consider evaluations of flavouring substances assessed since 2000 by the Joint FAO/WHO Expert Committee on Food Additives
EFSA Panel on Food Contact Materials, Enzymes, Flavourings and Processing Aids (CEF)
doaj +1 more source
Synthesis and structure oftrans-1,2,3- tris(3-thenoyl)cyclopropane [PDF]
The title cyclopropane derivative, C18H12O3S3, was synthesized and its structure investigated by single-crystal X-ray diffraction and spectroscopic methods.
Saba, Antonio
core +1 more source
Purpose: studying seasonal periodicity of stereoisomerism of uteroplacental complex, the dynamics of body weight of infants, studying the chronostructure of mezorhythms of contractive activity of right and left parts of the uterus.Material and Methods ...
N. A. Rogova +4 more
doaj +1 more source
The classical geometry of the 6-endo transition state for nucleophilic additions into oxocarbenium ions can be perturbed by incorporating the reactive groups into medium-sized rings, leading to the formation of 2,6-trans-dialkyl tetrahydropyrans.
Xun Han (758877) +1 more
core +2 more sources

