continues to enhance the world of enantiomeric
separation with the introduction of two new customer-centric packaged solutions, EnantioPrep and ScalePrep, that are intended for high efficiency chiral separation of enantiomers.
It has been demonstrated that the addition of organic co-solvents to the aqueous buffer can dramatically alter the enantiomeric
excess (ee) of the hydrolysis reaction.
Among the topics are valence photoelectronic circular dichroism of gas phase enantiomers, the infrared and Raman detection of transient chirality recognition in the gas phase with ethanol as a case study, enantioselectivity in gas-phase ion-molecule reactions, equilibrium methods, deoxy oligonucliotides as chiral references for discriminating enantiomeric
amino acids under mass spectrometry, solution-phase versus gas-phase chiral recognition by electrospray ionization mass spectrometry with a case study of two chiral selector classes.
The team reasoned that if our Solar System formed in a massive star-forming region like Orion's, then circularly polarized radiation could have induced enantiomeric
excesses in the parent bodies of meteorites and subsequently delivered to Earth.
113) A chiral compound and its mirror image are said to have an enantiomeric
relationship to each other and are called enantiomers.
Methylphenidate  contains two chiral carbons, and so exists in four enantiomeric
This finding is consistent with those of our own scientists who have also detected significant reductions in product yields and enantiomeric
excess resulting from the trace moisture contamination of DPC.
Ropivacaine is an enantiomeric
isomer of bupivacaine that has similar anaesthetic properties, but is potentially less cardiotoxic and neurotoxic (11-14).
The 1st Isolation of Enantiomeric
and Meso-Zeaxanthin in Nature.
The existing commercial projects have demonstrated that it is often cheaper to produce single enantiomeric
drugs with chromatography rather than use traditional technologies such as crystallization and/or asymmetric synthesis.
Many attractive features of cyclodextrin, covalent or noncovalent catalysis, and enantiomeric
catalysis arise from the specific interaction between cyclodextrin units and guest molecules .
It should be noted that DDT was a poor example to use as an enantiomeric
insecticide ("Reflections on Insecticides: Mirror forms of agrochemicals set risk," SN: 1/8/05, p.
In all cases, the Stille coupling product 6 was isolated with > 98 percent enantiomeric
excess, indicating that the chirality was transferred completely from S during the reaction.
The results of the reduction reactions indicated that as the number of stereogenic centers increased at the linking point on the polymer, the % enantiomeric
excess of the alcohols produced during the reaction also increased from 13 % enantiomeric
excess to 54 % enantiomeric
FTIR spectroscopy and a commercially available high-throughput FTIR system were used to determine enantiomeric