Used as a specialty intermediate in organic synthesis, particularly in the preparation of hindered amine light stabilizers (HALS). Its cyclic imide structure with tetramethyl substitution provides steric protection, making it valuable in polymer stabilization systems. It is incorporated into coatings, plastics, and adhesives to enhance resistance to UV degradation and thermal aging. Due to its stability and reactivity profile, it also serves in the development of pharmaceuticals and agrochemicals where controlled ring-opening or functionalization is required.