Used as a key intermediate in the synthesis of sulfonamide antibiotics, particularly in the production of sulfamethoxazole. It plays a critical role in forming the amide bond that links the sulfonamide group to the isoxazole ring, enhancing the antimicrobial activity of the final compound. Commonly employed in pharmaceutical manufacturing for antibacterial agents effective against a broad spectrum of pathogens. Its reactivity and stability make it suitable for use in controlled industrial environments where precise reaction conditions are maintained.