Used primarily as an intermediate in the synthesis of advanced fluoroquinolone antibiotics. It plays a key role in modifying the piperazine and fluorine groups on the norfloxacin core, allowing development of novel antimicrobial agents with improved activity against resistant bacterial strains. Its structural flexibility enables pharmaceutical researchers to enhance drug penetration, broaden spectrum coverage, and reduce side effects in next-generation quinolone designs. Commonly applied in lab-scale research and preclinical drug development.