Used as a key intermediate in the synthesis of UV absorbers and photostabilizers for coatings, plastics, and sunscreens due to its conjugated structure that absorbs ultraviolet light. Its derivative esters are commonly found in cosmetic formulations to protect skin from UV degradation. Also employed in organic synthesis for constructing more complex aromatic systems through coupling reactions or polymerization processes. Shows potential in materials science for developing light-responsive polymers and functional films.