5-Bromoquinazolin-4-amine is primarily used in pharmaceutical research and development. It serves as a key intermediate in the synthesis of various biologically active compounds, particularly those targeting cancer and other diseases. Its quinazoline core structure is often incorporated into molecules designed to inhibit specific enzymes, such as tyrosine kinases, which play a critical role in cell signaling and cancer progression. Additionally, this compound is utilized in medicinal chemistry to explore structure-activity relationships, aiding in the optimization of drug candidates for improved efficacy and selectivity. Its applications extend to the development of potential therapeutic agents for conditions like inflammation and microbial infections, making it a valuable tool in drug discovery.