Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors for cancer treatment. Its phosphine oxide group enables participation in various coupling reactions, making it valuable in medicinal chemistry for building complex molecules. Also employed in agrochemicals to enhance the efficacy of certain pesticides due to its ability to improve molecular stability and binding affinity. Additionally, serves as a ligand precursor in catalysis, supporting transition metal-catalyzed transformations in research and industrial processes.