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The isomers can be separated by a method called stereoisomerism. The first person that is documented to have used this method is one Louis Pasteur.
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What type of species can be separated by HPLC but not by gas liquid chromatography?
mixture of enantiomers can be separated by HPLC
Into what two groups can cells be separated?
Cells can be separated into prokaryotic and eukaryotic cells.
D-glucose and l-glucose are are examples of what?
According to the Fischer projection formula, they are enantiomers.
Malaysia's two geographical regions are separated by?
it is separated by the east Asia pacific waters.
What is the difference between racemic mixture and mesocompounds?
1:1 molar solution of two enantiomers is recemic mixture and it may be resolved into two parts by chemical means while mesoform is a pure substance and can not be resolved, but both these are optically inactive.
What type of species can be separated by HPLC but not by gas liquid chromatography?
mixture of enantiomers can be separated by HPLC
Can glycerol form any enantiomers?
Yes, it can. There are two glycerol enantiomers, depending on the position of OH group on the second carbon atom.
Why are enantiomers of biological interest?
Mainly because enantiomers have identical physical and chemical properties. However, the difference between two enantiomers can have tremendous impact, especially in biological systems, because many important biological molecules are chiral.
How is chiral resolution process?
The separation of a racemic mixture into two optically active forms (+ or −) is known as chiral resolution. Since diastereomers have different chemical and physical properties, they can be separated into corresponding enantiomers by chiral resolution. This method is called enantiomeric enrichment, and it is a process of continuously increasing the percentage of enantiomers until the enantiomeric excess finally approaches 100%./BOC Sciences
What is A mixture of equal amounts of two enantiomers?
its called a racemic mixture and is optically inactive
Optical isomerism in aldehydes and ketones?
The carbonyl group present in aldehydes or ketones itself is optically inactive but if a carbon attached to carbonyl group is asymmetric (attached to four different groups or atoms) then such compound may show to enantiomers as there are two enantiomers of CH3-CHCl-CHO.
How many enantiomers are possible for the aldoheptoses?
Aldoheptoses have seven carbon atoms and one chiral center, so they can have a maximum of 2^1 = 2 enantiomers.
Why Ribose and deoxyribose specifically included in genetic material?
The only answer I can offer (I must admit that I am not objective and promote the idea I published with my friend some two years ago) is as follows: alfa-ribopyranose (which is in solution in equilibrium with beta-ribopyranose, both furanose forms and an open form) is the easiest racemate to get separated to enantiomers in a process we call the absolute enantioselective separation (AES). It is a chromatography-like process in which the molecules to be separated are oriented in two orthogonal directions parallel to the surface. Then, in opposite enantiomers different groups are oriented towards the surface. Thus, the energy of interactions of opposite enantiomers with the surface is different and in a chromatography-like process the molecules of the opposite enantiomers will move along the surface with different rates. Additionally, AES is capable of separating not only enantiomers but other isomers (including diastereoisomers) as well. The factors that can orient molecules in (more or less) orthogonal directions that are parallel to the surface are:1. electric field plus an interaction of molecules with a pattern on the (flat) surface or2. interactions with two independent patterns on the (chiral) surface.A racemate of ribose is easier to get separated to enantiomers than other mono- saccharides because in one enantiomer all four (including the anomeric one) hydroxy groups are oriented towards the surface while in the opposite enantiomer all these OH groups are oriented against the surface, and thus, the energy of interactions between the enantiomers and the surface is the largest for alfa-DL-ribopyranose. Our answer to the "why ribose" question is that (under specific conditions) it was the only mono- saccharide that could have been isolated in an enantiomerically pure form which is likely to be a necessary condition for the life emergence. [Current Organic Chemistry, 12(12) (2008), 995; Origins of Life and Evolution of Biospheres, 37(2007), 167]. The plausible answer to the question "why is ribose in the beta-furanose form" has been offered by Banfalvi [DNA Cell Biol., 2006, 25, 189].
What isomers that are mirror images of each other?
Chiral molecules have mirror-image isomers
What is difference between epimers and enantiomers?
Epimers are those carbons that have "H" and "OH" are present and they can change their position Enantiomers are special type of isomer these are mirror image to each other
What is the term used for a pair of positive and negative isomers?
enantiomers
Will all enzymes react the same way with two enantiomers?
no, enzymes are very specific with respect to stereo-chemistry and usually is active only to one enantiomer
