If D- and L- glucose are enantiomers, are D- and L-fructose not enantiomers?

Answer 1

What are you talking about? They ARE enantiomers.

Here, this source says so:

"D- and L-glucose are enantiomers, nonsuperposable mirror-image stereoisomers. Similarly, D- and L-fructose are enantiomers."

If two sugars have every horizontal #"OH"# and #"H"# pair switched, they are enantiomers.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer 2

Jacob Anderson

No, D- and L-fructose are not enantiomers. While D-glucose and D-fructose are epimers, meaning they differ only in the configuration around one carbon atom, L-fructose has a different stereochemistry altogether compared to both D-glucose and D-fructose.

By signing up, you agree to our Terms of Service and Privacy Policy

Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.