An aldose is a
monosaccharide(a simple sugar) containing one aldehydegroup per moleculeand having a chemical formulaof the form Cn(H2O)n(n>=3).
With only 3
carbon atoms, glyceraldehydeis the simplest of all aldoses.
isomerize to ketoses in the Lobry-de Bruyn-van Ekenstein transformation. Aldose differs from ketose in that it has a carbonylgroup at the end of the carbon chain whereas the carbonyl group of a ketose is in the middle; this fact allows them to be chemically differentiated through Seliwanoff's test.
List of aldoses
Triose: glyceraldehyde, dihydroxylacetone
Tetroses: erythrose, threose
Pentoses: ribose, arabinose, xylose, lyxose
Hexoses: allose, altrose, glucose, mannose, gulose, idose, galactose, talose
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