Q1: What is the basic information?

A1:
CAS No. 93106-60-6
Molecular Formula: C₁₉H₂₂FN₃O₃
Appearance: Off-white to pale yellow crystalline powder, slightly bitter taste. Extremely soluble in water, readily soluble in DMF, slightly soluble in methanol, practically insoluble in chloroform and ether. Gradually turns pale yellow upon light exposure.

Q2: What is its pharmacological action?

A2: Third-generation fluoroquinolone broad-spectrum bactericide for animal use. Binds to bacterial DNA gyrase (subunit A) and topoisomerase IV → blocks DNA supercoiling → inhibits DNA replication/transcription/repair → bacterial death (concentration-dependent). Effective against G⁻ (E. coli, Salmonella, Pasteurella, Haemophilus, Proteus), G⁺ (Streptococcus, some Staph. aureus), Mycoplasma, Chlamydia, and eperythrocytes. Partially metabolized in vivo to ciprofloxacin (still active).

Q3: What are its indications?

A3: Swine/avian mycoplasmal diseases, E. coli/Salmonella diarrhea, swine infectious pleuropneumonia, Haemophilus parasuis infection, bovine mastitis (Gram-negative bacteria), aquatic bacterial septicemia.

Q4: What are the storage requirements?

A4: Sealed, protected from light, cool and dry place (<25°C).