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  4. How many alcohol groups are present in Fructofuranose structure?

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Q. How many alcohol groups are present in Fructofuranose structure?

NTA AbhyasNTA Abhyas 2022

Solution:

In fructose, the $OH$ group at $C-5$ can attack the $C=O$. group at $C-2$ and form a cyclic hemiketal. The product is called fructofuranose in analogy with the five-membered ring of furan.
The structure of $\alpha-D-(-)-$ Fructofuranose is:
Solution
It has $5-OH$ groups.