1. Anti-infection
    Cell Cycle/DNA Damage
  2. Bacterial
    Antibiotic
    Topoisomerase
  3. Nalidixic acid

Nalidixic acid 

Cat. No.: HY-B0398 Purity: 99.99%
Handling Instructions

Nalidixic acid, a quinolone antibiotic, is effective against both gram-positive and gram-negative bacteria. Nalidixic acid acts in a bacteriostatic manner in lower concentrations and is bactericidal in higher concentrations. Nalidixic acid inhibits a subunit of DNA gyrase and topoisomerase IV and reversibly blocks DNA replication in susceptible bacteria.

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

Nalidixic acid Chemical Structure

Nalidixic acid Chemical Structure

CAS No. : 389-08-2

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10 mM * 1  mL in DMSO USD 55 In-stock
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10 g USD 108 In-stock
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Description

Nalidixic acid, a quinolone antibiotic, is effective against both gram-positive and gram-negative bacteria. Nalidixic acid acts in a bacteriostatic manner in lower concentrations and is bactericidal in higher concentrations. Nalidixic acid inhibits a subunit of DNA gyrase and topoisomerase IV and reversibly blocks DNA replication in susceptible bacteria[1].

IC50 & Target

Topoisomerase

 

In Vitro

Nalidixic acid is against a variety of microorganisms, it is against with Escherichia coli, Pasteurella spp., Klebsiella pneuiiioniae, Aerobacter aeroyenes, Proteus spp., Salmonella spp., Shigella spp. and Brucella spp. with MIC values of 5.0-12.5 μg/ml, 0.5-2.5 μg/ml, 0.8-25.0 μg/ml, 1.0-25.0 μg/ml, 1.25-30.0 μg/ml, 8-3.2 μg/ml, and 7.5-10.0 μg/ml, respectively[1].

In Vivo

The in vivo activity of Nalidixic acid is most pronounced against Gram-negative bacteria, while Gram-positive organisms are generally more resistant. Maximal activity is observed against systemic infections caused by E. coli, A. aerobacter, Proteus mirabilis, Shigella fkxneri, the ED50 values are 25 mg/kg, 60 mg/kg, 50 mg/kg, and 62 mg/kg, respectively[1].
The acute toxicity (LD50) of Nalidixic acid in mice following oral and parenteral administration is: oral, 3300 mg/kg; intravenous, 176 mg/kg, and subcutaneous, 500 mg/kg[1].

Molecular Weight

232.24

Formula

C₁₂H₁₂N₂O₃

CAS No.

389-08-2

SMILES

O=C(C1=CN(CC)C2=C(C=CC(C)=N2)C1=O)O

Shipping

Room temperature in continental US; may vary elsewhere.

Storage
Powder -20°C 3 years
  4°C 2 years
In solvent -80°C 6 months
  -20°C 1 month
Solvent & Solubility
In Vitro: 

DMSO : 6 mg/mL (25.84 mM; Need ultrasonic)

H2O : 5 mg/mL (21.53 mM; ultrasonic and warming and heat to 80°C)

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 4.3059 mL 21.5295 mL 43.0589 mL
5 mM 0.8612 mL 4.3059 mL 8.6118 mL
10 mM 0.4306 mL 2.1529 mL 4.3059 mL
*Please refer to the solubility information to select the appropriate solvent.
In Vivo:
  • 1.

    Add each solvent one by one:  10% DMSO    90% corn oil

    Solubility: ≥ 0.5 mg/mL (2.15 mM); Clear solution

*All of the co-solvents are provided by MCE.
References

Purity: 99.99%

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Keywords:

Nalidixic acidBacterialAntibioticTopoisomeraseantibioticDNA gyrasesusceptible bacteriaEscherichia coliKlebsiella pneuiiioniaeAerobacter aeroyenesProteus sppSalmonella spp.Inhibitorinhibitorinhibit

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