Methacrylonitrile(CAS No:126-98-7), also known as isobutyronitrile, is an organic compound with chemical formula C4H5N. It is a colorless liquid, slightly soluble in water and chloroform, and miscible with propanol, ether, acetone, octane and toluene. It is an important raw material for organic synthesis and is mainly used to prepare esters such as 2- methyl methacrylate and synthetic resins. Methacrylonitrile is an important raw material for organic synthesis, which is mainly used to prepare esters such as 2- methyl methacrylate and synthetic resins.