4-Bromobenzo[d]oxazole is primarily used as a versatile intermediate in organic synthesis, particularly in the development of pharmaceuticals and agrochemicals. Its structure makes it valuable for constructing complex molecules, especially in the synthesis of heterocyclic compounds. It is often employed in the preparation of biologically active compounds, including potential drug candidates targeting various diseases. Additionally, it serves as a building block in the creation of fluorescent dyes and optical materials due to its ability to participate in photophysical processes. Its bromine atom also allows for further functionalization through cross-coupling reactions, making it a key component in medicinal chemistry and material science research.