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ketose

File:DL-Fructose.svg · Wikimedia Commons · See Wikimedia Commons

EntityQ409108· pop 38· linked from 199 articles

Also known as ketoses

class=skin-invert-image|thumb|right|250px|Fructose, an example of a ketose. The ketone group is the double-bonded oxygen.

Wikidata facts

Subclass of
monosaccharide
Has part
hydrogen
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Commons category
Ketoses
topic's main category
Category:Ketoses
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Encyclopedic overview

3 sections
Contents
  • Chemistry
  • Examples of ketoses
  • References

class=skin-invert-image|thumb|right|250px|Fructose, an example of a ketose. The ketone group is the double-bonded oxygen.

In organic chemistry, a ketose is a monosaccharide containing one ketone () group per molecule. The simplest ketose is dihydroxyacetone (), which has only three carbon atoms. It is the only ketose with no optical activity. All monosaccharide ketoses are reducing sugars, because they can tautomerize into aldoses via an enediol intermediate, and the resulting aldehyde group can be oxidised, for example in the Tollens' test or Benedict's test. Ketoses that are bound into glycosides, for example in the case of the fructose moiety of sucrose, are nonreducing sugars.

Excerpted from Wikipedia’s “ketose” article, available under the CC BY-SA 4.0 licence.

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