Is Hemiacetal a reducing sugar?

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Solution

Yes, hemiacetal is a reducing sugar.
A compound will be considered as a reducing sugar if it has an aldehydic group in it or tautomerizes itself into aldehyde in solution.
The structure of hemiacetal.
It is easily prepared from aldehyde and alcohol.
Hemiacetal has the formula (R(COH)HOR), Which tautomerizes itself into aldehyde in solution.

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