Used primarily as a photoinitiator in UV-curable systems, enabling rapid polymerization of inks, coatings, and adhesives upon exposure to ultraviolet light. Its ability to generate free radicals under UV irradiation makes it valuable in printing inks, electronic coatings, and dental materials where quick curing and low yellowing are desired. Also employed in the synthesis of fine chemicals and pharmaceuticals as an intermediate due to its reactive carbonyl group and stable methoxy substituents.