Used primarily as a photoinitiator in UV-curable systems such as inks, coatings, and adhesives. It absorbs UV light and generates free radicals that initiate polymerization, enabling fast curing under UV exposure. Commonly found in printing inks and protective films where rapid drying and strong adhesion are required. Also serves as an intermediate in organic synthesis for pharmaceuticals and fine chemicals. Its methyl group enhances solubility and reactivity in certain formulations compared to unsubstituted analogs.