Question #e8042

1 Answer
Ernest Z.
Apr 14, 2017

D-Glucose is NOT L-glucose.

Explanation:

D-Glucose and L-glucose are non-superimposable mirror image isomers of each other.

You can see this in the two Fischer projections shown below.

www.rpi.edu

You can recognize D-glucose in a Fischer projection because the highest-numbered chiral carbon (carbon 5) has the #"OH"# group on the right hand side of the vertical carbon chain.

L-Glucose has that #"OH"# group on the left, and every other chiral carbon has the #"OH"# on the side opposite to that of the corresponding carbon in D-glucose.

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