Succinimide is widely used in the pharmaceutical industry as a key intermediate in the synthesis of various drugs, particularly anticonvulsants like ethosuximide, which is effective in treating absence seizures. It also serves as a building block in the production of other therapeutic compounds, including anti-inflammatory and antimicrobial agents.

In organic chemistry, succinimide is utilized as a reagent in the synthesis of peptides and other organic molecules, often acting as a protective group for amines during chemical reactions. Additionally, it finds application in the preparation of N-halo compounds, which are used as disinfectants and bleaching agents.

In the polymer industry, succinimide derivatives are employed as additives to improve the thermal stability and performance of plastics and resins. Its versatility in various chemical processes makes it a valuable compound in both industrial and research settings.