What is the structure of L-fructose?
L-Fructose
| PubChem CID | 5460024 |
|---|---|
| Structure | Find Similar Structures |
| Chemical Safety | Laboratory Chemical Safety Summary (LCSS) Datasheet |
| Molecular Formula | C6H12O6 |
| Synonyms | L-Fructose L-(+)-Fructose 7776-48-9 (3R,4S,5S)-1,3,4,5,6-pentahydroxyhexan-2-one keto-L-fructose More… |
What is the difference between D and L-fructose?
Fructose can be be both D-fructose and L-fructose based on the orientation of the -OH group in the 5th Carbon. If the 5th Carbon -OH group is on the right side then it is D-fructose. If it is on the left side, then it is L-fructose.
What is the difference between L and D sugars?
Main Difference – D vs L Glucose Glucose is a sugar molecule that is found as either D-Glucose or L-Glucose in nature. The main difference between D and L Glucose is that D-Glucose rotates plane polarized light clockwise whereas L-Glucose rotates plane polarized light anticlockwise.
What is D and L form of sugar?
D and L designations of sugars are based on the position of the hydroxyl on the chiral carbon farthest from the carbonyl group in the Fischer projection of the molecule. All D-sugars have the –OH on the right side and L-sugars have the –OH on the left side.
Why is D-fructose Levorotatory?
Fructose, also called fruit sugar, is the only naturally occurring ketohexose . It is also referred to as levulose because it has an optical rotation that is strongly levorotatory.
Are alpha D-fructose and beta D-fructose anomers?
α-D-Fructofuranose and β-D-fructofuranose are anomers.
Is D-fructose Dextrorotatory or Levorotatory?
An older common name for fructose is levulose, after its levorotatory property of rotating plane polarized light to the left in contrast to glucose which is dextrorotatory.
What is dextro and Levorotatory?
If a compound rotates plane polarized light in the clockwise (+) direction, it is said to be dextrorotatory, while if it rotates light in the counterclockwise (-) direction it is levorotatory. ( We mentioned L- and D-amino acids in the previous section: the L-amino acids are levorotatory).
What is the difference between alpha D fructose and beta d fructose?
If the OH group is pointing “down”, it is alpha. If the OH group points “up”, it is beta. The L-isomers of fructose are the corresponding mirror images of the D-isomers.