1. KB-5246

KB-5246 is a tetracyclic quinolone and displays antibacterial activities.

For research use only. We do not sell to patients.

KB-5246 Chemical Structure

KB-5246 Chemical Structure

CAS No. : 119474-55-4

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Description

KB-5246 is a tetracyclic quinolone and displays antibacterial activities.

IC50 & Target

Bacterial[1]

In Vitro

KB-5246 is a tetracyclic quinolone and displays antibacterial activities. The MICs for 90% of isolates tested (MIC90s) of KB-5246 against gram-positive microorganisms such as Staphylococcus aureus, including methicillin-resistant S. aureus, Staphylococcus epidermidis, Streptococcus pneumoniae, and Streptococcus pyogenes, are 0.39 μg/mL. KB5246 inhibits 90% of isolates of Escherichia coli, Klebsiella pneumoniae, Klebsiella oxytoca at a concentration of 0.10 μg/mL or less. When a concentration of KB-5246 at the MIC or higher is added, no regrowth after 24 h of incubation is observed[1].

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

In Vivo

The 50% effective dose values of KB-5246 against S. pneumoniae 2132 infections are 50.5 mg/kg of body weight. The activities of KB-5246 against S. aureus Smith, P. aeruginosa GN11189, and Serratia marcescens GN7577 infections are comparable to those of ofloxacin and greater than those of norfloxacin[1].

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

Molecular Weight

425.86

Formula

C18H17ClFN3O4S

CAS No.
SMILES

[H]Cl.CN1CCN(C2=C(F)C=C3C4=C2OCC5=CSC(N45)=C(C(O)=O)C3=O)CC1

Shipping

Room temperature in continental US; may vary elsewhere.

Storage

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

Purity & Documentation
Cell Assay
[1]

Bactericidal activity is tested by evaluating the reduction of viable cells during exposure to KB-5246 for 24 h. An overnight culture of microorganisms in sensitivity test broth is diluted to about 104 CFU/mL in the same medium and incubated at 37°C on a shaker. After 2 h of incubation, KB-5246 is added to the cultures at final concentrations of one half, one, two, or four times the MIC[1].

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

Animal Administration
[1]

In vivo antibacterial activity against systemic infections in mice is determined. Ten male ddY mice weighing 19 to 23 g each are used for each dose level. An overnight culture in brain heart infusion broth at 37°C is diluted appropriately in the same medium with 4% gastrin mucin. A 0.2 mL sample of a bacterial suspension, corresponding to a dose 1 to 25 times higher than the minimal lethal dose, is injected intraperitoneally. Immediately after infection, mice are treated orally with a single dose of KB-5246. The number of mice surviving at each dose is counted 7 days after infection. The 50% effective dose is calculated by the probit method[1].

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

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Help & FAQs
  • Do most proteins show cross-species activity?

    Species cross-reactivity must be investigated individually for each product. Many human cytokines will produce a nice response in mouse cell lines, and many mouse proteins will show activity on human cells. Other proteins may have a lower specific activity when used in the opposite species.

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Product Name:
KB-5246
Cat. No.:
HY-19081
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