Methyl-4-hydroxy-2-butanone (CAS No: 157859-20-6) is an organic compound with the molecular formula C4H8O2. It is a colorless liquid with a sweet, fruity odor. The compound is used as a flavoring agent and fragrance additive in the food and cosmetic industries.Methyl-4-hydroxy-2-butanone is used as an intermediate in the synthesis of several pharmaceuticals, including the anticonvulsant pregabalin. It is also used to produce polyurethanes and polyureas, polyesters, and polyamides.Methyl-4-hydroxy-2-butanone is miscible in water and is soluble in many organic solvents such as ethanol and ether. Its boiling point is 108 °C and its melting point is -86 °C. It is a flammable liquid and should be handled with care.Methyl-4-hydroxy-2-butanone is produced from the oxidative cleavage of cyclohexanol with hydrogen peroxide catalyzed by a cobalt-containing catalyst. It is also produced from the oxidation of isobutanol and butyraldehyde.Methyl-4-hydroxy-2-butanone is a common chemical used in the manufacture of pharmaceuticals, fragrances, and cosmetics. It is also used as a food and beverage flavoring agent. Its sweet, fruity odor makes it a popular choice for many cosmetic and food products.Methyl-4-hydroxy-2-butanone is an important intermediate in several chemical processes and is widely used in the chemical industry. It is a versatile compound with multiple uses, including as a solvent and as a chemical reagent. Its use as a flavor and fragrance additive makes it popular in the food and beverage industry.