The Ketoses

Ketoses are the isomers of aldoses except that, with very few exceptions, the keto group appears at position 2. As a result, there is one less asymmetric center than in an aldose with the same number of carbons.

D-glycerotetrulose
 
D-erythropentulose D-threopentulose
 
D-psicose D-fructose D-sorbose D-tagatose
 
 

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