Ketose

Error creating thumbnail: File missingFructose, 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

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

## Qualitative reaction

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General qualitative reaction for ketoses is Seliwanoff's test.

## See also

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* Aldose

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