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Fischer projections were originally proposed for the depiction of carbohydrates and used by chemists, particularly in organic chemistry and biochemistry. The use of Fischer projections in non-carbohydrates is discouraged, as such drawings are ambiguous and easily confused with other types of drawing. The main purpose of Fischer projections is ...
A Fischer projection will restrict a 3-D molecule to 2-D, and therefore, there are limitations to changing the configuration of the chiral centers. Fischer projections are used to determine the R and S configuration on a chiral carbon and it is done using the Cahn Ingold Prelog rules .
As is depicted in a Fischer projection of D-threose, the adjacent substituents will have a syn orientation in the isomer referred to as "threo", and are anti in the isomer referred to as "erythro". [3] [4] Fischer projections depicting the two enantiomers of threose
In the case of saccharides, when drawn in the Fischer projection the erythro isomer has two identical substituents on the same side and the threo isomer has them on opposite sides. [7] When drawn as a zig-zag chain, the erythro isomer has two identical substituents on different sides of the plane (anti).
Two important hexoses, in the Fischer projection. In chemistry , a hexose is a monosaccharide (simple sugar) with six carbon atoms. [ 1 ] [ 2 ] The chemical formula for all hexoses is C 6 H 12 O 6 , and their molecular weight is 180.156 g/mol. [ 3 ]
Fischer projection: Skeletal formula: Ball-and-stick model: While the optical rotation of glyceraldehyde is (+) for R and (−) for S, this is not true for all ...
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