Xylose is a five-carbon sugar or pentose that is naturally found in various fruits and vegetables, including corn husks, oats, and rice bran. It is commonly used in the pharmaceutical and food industries for its sweetening properties, and as a raw material for the production of xylitol. Xylose has a few synonyms, which may include wood sugar, birch sugar, and pentose sugar. These names reflect its natural sources and its classification as a type of sugar. Xylose is similar to other pentose sugars, such as arabinose and ribose, but is unique in its properties and applications.