Sugar acids are monosaccharides with a carboxyl group. Main classes of sugar acids include: ⁕Aldonic acids, in which the aldehyde functional group of an aldose is oxidized ⁕Ulosonic acids, in which the first hydroxyl group of a 2-ketose is oxidised creating an α-ketoacid. ⁕Uronic acids, in which the terminal hydroxyl group of an aldose or ketose is oxidized ⁕Aldaric acids, in which both ends of an aldose are oxidized Wikipedia [ - ]

Sugar acids are monosaccharides with a carboxyl group. Main classes of sugar acids... [ + ]