As a characteristic fragment, 2,4-piperidinedione is also widely used as an intermediate in the synthesis of ibrutinib and paliperidone. In industry, it can also be used as a denaturant, a dyeing aid, and a starting material for the synthesis of a series of Chemicalbook products (including medicines, disinfectants, dyes, food seasonings, adhesives, explosives, etc.). It can also be used as a catalyst, but the amount should not be too much, otherwise it will affect the product quality.