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Ketose

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Fructose, an example of a ketose. The ketone group is the double-
bonded oxygen.

A ketose is a sugar containing one ketone group per molecule.

With 3 carbon atoms, dihydroxyacetone is the simplest of all ketoses and is the only one having no optical activity.

List of ketoses

List of ketoses

Trioses: dihydroxyacetone
Tetroses: erythrulose
Pentoses: ribulose, xylulose
Hexoses: fructose, psicose, sorbose, tagatose

Qualitative reaction

Qualitative reaction

General qualitative reaction for ketoses is Seliwanoff’s test.

See also

See also

Aldose

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