6-Bromo-2H-1,4-benzoxazin-3(4H)-one is primarily used in organic synthesis as a key intermediate for the development of various biologically active compounds. It plays a significant role in the synthesis of herbicides and pesticides, particularly in the creation of compounds that target weed and pest control in agriculture. Additionally, it is utilized in pharmaceutical research for the development of potential therapeutic agents, especially in the study of anti-inflammatory and antimicrobial properties. Its unique structure allows it to serve as a building block for the design of more complex molecules in medicinal chemistry.