Ketose

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. Ketoses can isomerize into an aldose when the carbonyl group is located at the end of the molecule. Such ketoses are reducing sugars.

List of ketoses

All ketoses listed here are 2-ketones: Trioses: dihydroxyacetone
Tetroses: erythrulose
Pentoses: ribulose, xylulose
Hexoses: fructose, psicose, sorbose, tagatose
Heptoses: sedoheptulose
Octoses: D-manno-octulose (the basis for Kdo)
Nonoses: D-glycero-D-galacto-nonulose (the basis for Neu)

Qualitative reaction

General qualitative reaction for ketoses is Seliwanoff's test.

Translation of "Ketose"

Czech: Ketózy, German: Ketosen, Spanish: Cetosa, Esperanto: Ketozo, French: Cétose, Japanese: ケトース, Polish: Ketozy, Russian: Кетозы, Finnish: Ketoosi (yhdiste), Swedish: Ketos, Turkish: Ketoz, Chinese: 酮糖.