🥼organic chemistry review

Reducing sugars

Written by the Fiveable Content Team • Last updated September 2025
Written by the Fiveable Content Team • Last updated September 2025

Definition

Reducing sugars are carbohydrates that can act as reducing agents due to their free aldehyde group or a ketone group that can isomerize to an aldehyde, enabling them to donate electrons to other molecules. These sugars undergo specific reactions that can help identify them, such as the Benedict's test.