An aldose's a monosaccharide (a simple sugar) containing one aldehyde group per molecule and having a chemical formula of the form Cn(H2O)n. With only two carbon atoms, glycolaldehyde's the simplest of all aldoses. Aldoses isomerize to ketoses in the Lobry-de Bruyn-van Ekenstein transformation. Aldose differs from ketose in that it's a carbonyl group at the end of the carbon chain whereas the carbonyl group of a ketose's in the middle; this fact allows them to be chemically differentiated throu… (More on Aldose)