Mucic acid is a crystalline dicarboxylic acid that is used in the production of various chemicals and drugs. There are a few synonyms for mucic acid, including galactaric acid, saccharic acid, and mesoxalic acid. Galactaric acid is an oxidized form of galactose and is commonly found in plants and animal tissues. Saccharic acid is a dicarboxylic acid that is produced by the oxidation of various sugars. Mesoxalic acid is an organic compound that is derived from oxalic acid and is used in the production of pharmaceuticals. These synonyms are all related to mucic acid in terms of their chemical properties and uses.