Antofloxacin 

Antofloxacin is a well tolerate, orally active and broad-spectrum 8-amino-fluoroquinolone with potent antibacterial activities. Antofloxacin shows superior antibacterial activity against gyrA mutation-positive H. pylori strains, especially in Asn87- mutated strains, compared to levofloxacin. Antofloxacin is a weak, reversible inhibitor of CYP1A2 for the research of infections caused by a diverse group of bacterial species^[1][2][3].

Antofloxacin (2.5~160 mg/kg; s.c.; 24 hours) penetration ratio ranges from 1.22 to 1.54 for the total drug concentrations and is independent of the dose levels^[3]. Antofloxacin increases the plasma theophylline concentration, partly by acting as a mechanism based inhibitor of CYP1A2. Antofloxacin inhibits the formation of the three metabolites of theophylline was time-, concentration- and NADPH-dependent, which is characteristic of mechanism-based inhibition^[2].

MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.

376.38

C₁₈H₂₁FN₄O₄

119354-43-7

O=C1C2=C(N)C(F)=C(N3CCN(CC3)C)C4=C2N(C=C1C(O)=O)[C@@H](C)CO4

Room temperature in continental US; may vary elsewhere.

Please store the product under the recommended conditions in the Certificate of Analysis.

• [1]. He XJ, et al. Efficacy and Safety of Antofloxacin-Based Triple Therapy for Helicobacter pylori Eradication Failure in China [published online ahead of print, 2021 Feb 8]. Dig Dis Sci. 2021;10.1007/s10620-021-06856-z.  [Content Brief]

  [2]. Liu L, et al. Modulation of pharmacokinetics of theophylline by antofloxacin, a novel 8-amino-fluoroquinolone, in humans. Acta Pharmacol Sin. 2011;32(10):1285-1293.  [Content Brief]

  [3]. Zhou YF, et al. In Vivo Pharmacokinetic and Pharmacodynamic Profiles of Antofloxacin against Klebsiella pneumoniae in a Neutropenic Murine Lung Infection Model. Antimicrob Agents Chemother. 2017;61(5):e02691-16. Published 2017 Apr 24.  [Content Brief]