Used as an intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in reactions where a functionalized phosphine oxide moiety is required. Its amine group allows for further derivatization, making it valuable in the preparation of ligands for catalysis, especially in palladium-catalyzed cross-coupling reactions. Also employed in the development of flame retardants due to the phosphine oxide group’s ability to enhance thermal stability and reduce flammability in polymer systems. Its dual functionality enables use in constructing complex organic molecules in medicinal chemistry research.