Sugar acid

Sugar acids are monosaccharides that have had an -OH group oxidized to a carboxyl group.

Main classes of sugar acids include:
 * Aldaric acids, in which the aldehyde functional group of an aldose is oxidized
 * Aldonic acid, in which the terminal hydroxyl group of an aldose is oxidized
 * Uronic acid, in which both ends of an aldose are oxidized

Examples of sugar acids include:
 * Ascorbic acid
 * Glucuronic acid