n-Butyl methacrylate, also known as n-butyl isobutenoate, is an organic compound with the chemical formula C8H14O2. It appears as a colorless transparent liquid, insoluble in water, miscible with alcohols and ethers, and soluble in most organic solvents. It is primarily used in organic synthesis, the production of plastics, adhesives for optical glass, and as an auxiliary agent in textiles, leather, and papermaking.