Question

What are the functional groups and number of carbons in a ketopentose?

Short answer

A ketopentose contains a ketone group and a $5$carbon atom.

Step-by-step solution

Introduction

• Ketoses are monosaccharides with a ketone institution connected to every molecule.
• If the carbonyl institution is close to the stop of the chain, ketoses can isomerize into aldoses.
• Fructose and ribulose are examples of ketoses.

Ketopentose

• The 2-position of a pentose has a single ketone group.
• A five-carbon monosaccharide with an aldehyde group at position 1 (aldopentose) or a ketone group at position 2 (ketopentose) (ketopentose).

Determine the functional group and number of carbon in ketopentose

Keto refers to a ketone group, while pentose refers to a five-carbon chain.