Phthalimide is widely used in the synthesis of pharmaceuticals, particularly in the production of antifungal agents, anti-inflammatory drugs, and other bioactive compounds, including the anticonvulsant phenytoin via the Gabriel synthesis. It serves as a key intermediate in the Gabriel synthesis, a method for preparing primary amines, which are essential building blocks in drug development. Additionally, phthalimide derivatives are employed in agrochemicals, such as herbicides and pesticides, due to their ability to inhibit specific enzymes in pests. In material science, it is utilized in the production of polymers and resins, contributing to the development of coatings, adhesives, and plasticizers. In biochemistry, it is used to study enzyme reactions and cellular metabolism processes. Its versatility in organic synthesis and industrial applications makes it a valuable compound in various fields.