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Bees and Beekeeping

Difference between D L Sugars?

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2008-02-29 16:44:49

D and L are optical isomer of each other, or non superimposible

mirror images. The convention uses Glyceraldhyde as the reference.

In a fisher projection the OH of glyceraldehyde is on the right

side ( more improtantly in the R configuration)in the D isomer and

on the left side ( or the molecule is in the L configuration) in

the L isomer. So for all other sugars it looks at the last chiral

center for the molecule if the chiral center is R it is a D isomer

if the last chiral center is in the S configuration it is an L


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