Used as an active pharmaceutical ingredient in antibiotics, particularly effective against a broad range of bacterial infections including respiratory, urinary tract, and skin infections. It functions by inhibiting bacterial DNA gyrase and topoisomerase IV, enzymes essential for DNA replication and repair. Its structure enhances penetration into tissues and cells, improving efficacy against intracellular pathogens. Also shows activity against some drug-resistant bacterial strains, making it valuable in treating complicated infections where other antibiotics fail.