Catalog No.S1884 Synonyms: AT-4140, CI-978, PD 131501

For research use only.

Sparfloxacin (AT-4140, CI-978, PD 131501) is a fluoroquinolone antibiotic, shows broad and potent antibacterial activity.

Sparfloxacin Chemical Structure

CAS No. 110871-86-8

Purity & Quality Control

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Biological Activity

Description Sparfloxacin (AT-4140, CI-978, PD 131501) is a fluoroquinolone antibiotic, shows broad and potent antibacterial activity.
In vitro

Sparfloxacin shows broad and potent antibacterial activity. Its MICs for 90% of the strains tested are 0.1 to 0.78 μg/ml against gram-positive organisms, such as members of the genera Staphylococcus , Streptococcus and Enterococcus , and 0.0125 to 1.56 μg/ml against gram-negative organisms, such as members of the family Enterobacteriaceae and the genera Pseudomona . Its MICs are 0.025 to 0.78 μg/ml against glucose nonfermenters, 0.2 to 0.78 μg/ml against anaerobes, 0.0125 to 0.05 μg/ml against Legionella .[1] Sparfloxacin targets DNA gyrase and inhibits DNA synthesis. [2]

In vivo Sparfloxacin showed good oral efficacy against systemic infections with Staphylococcus aureus , Streptococcus pyogenes , Streptococcus pneumoniae , Escherichia coli , and Pseudomonas aeruginosa in mice. [1]

Protocol (from reference)

Animal Research:


  • Animal Models: infection models in mice
  • Dosages: 0-25 mg/kg
  • Administration: oral

Solubility (25°C)

In vitro

In vivo

Add solvents to the product individually and in order
(Data is from Selleck tests instead of citations):
0.5% CMC
For best results, use promptly after mixing.

10 mg/mL

Chemical Information

Molecular Weight 392.4


CAS No. 110871-86-8
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles CC1CN(CC(N1)C)C2=C(C(=C3C(=C2F)N(C=C(C3=O)C(=O)O)C4CC4)N)F

In vivo Formulation Calculator (Clear solution)

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Working concentration: mg/ml;

Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Molarity Calculator

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