Fischer projection

From Academic Kids

Missing image
D-glucose.png
Fischer projection of D-glucose

In chemistry (particulary organic chemistry and biochemistry), a Fischer projection is a two-dimensional representation of a three-dimensional organic molecule by projection. All bonds are depicted as horizontal or vertical lines. The carbon chain is depicted vertically, with carbon atoms represented by the center of crossing lines. The orientation of the carbon chain is so that the C1 carbon is at the top.

In a Fischer projection, all horizontal bonds project forward (out of the page or screen). Therefore, a Fischer projection cannot be rotated in the plane of the page or the screen, as the orientation of bonds relative to one another can change, converting a molecule to its enantiomer.

Fischer projections are most commonly used in biochemistry to represent monosaccharides, but can also be used for amino acids or for other organic molecules. Since Fischer projections depict the stereochemistry (three-dimensional structure) of a molecule, Fischer projections are very useful for differentiating between enantiomers of chiral molecules.

The Fischer projection was invented by Emil Fischer.

See also

de:Fischer Nomenklatur pl:Projekcja Fischera

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