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> Levofloxacin [100986-85-4]

Levofloxacin [100986-85-4]

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Cat# HY-B0330-5g

Size : 5g

Brand : MedChemExpress

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Levofloxacin ((-)-Ofloxacin) is an orally active antibiotic and is active against both Gram-positive and Gram-negative bacteria. Levofloxacin inhibits the DNA gyrase and topoisomerase IV. Levofloxacin can be used for chronic periodontitis, airway inflammation and BK Viremia research. Levofloxacin shows anti-orthopoxvirus activity.

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

Levofloxacin Chemical Structure

Levofloxacin Chemical Structure

CAS No. : 100986-85-4

This product is a controlled substance and not for sale in your territory.

Based on 8 publication(s) in Google Scholar

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Description

Levofloxacin ((-)-Ofloxacin) is an orally active antibiotic and is active against both Gram-positive and Gram-negative bacteria. Levofloxacin inhibits the DNA gyrase and topoisomerase IV. Levofloxacin can be used for chronic periodontitis, airway inflammation and BK Viremia research. Levofloxacin shows anti-orthopoxvirus activity[1][2][3][4][5].

IC50 & Target

Quinolone

 

TOPO IV

 

In Vitro

Levofloxacin shows inhibition effects to M. tuberculosis susceptible strains OFLO, LVFX, and SPFX with MIC50 values of 1.0, 0.5 and 0.25 μg/mL, respectively[4]。

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

Levofloxacin Related Antibodies
In Vivo

Levofloxacin (10.7 mg/kg; i.p., once daily for 10 days or 3 weeks) time-dependently induces toxic effects on liver and heart in albino mice[3].

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

Animal Model: Matured male Albino mice[3]
Dosage: 10.7 mg/kg
Administration: Intraperitoneal injection; 10.7 mg/kg, once daily for 10 days or 3 weeks.
Result: Induced severe congestion of blood vessels in the portal area, central veins with inflammatory cells infiltration, necrosis with pyknosis of cardiac muscle nuclei and apoptosis, degeneration and necrosis of hepatocytes.
Clinical Trial
Molecular Weight

361.37

Formula

C18H20FN3O4
CAS No.

100986-85-4
Appearance

Solid

Color

Off-white to light yellow

SMILES

O=C(C(C1=O)=CN2[C@@H](C)COC3=C(N4CCN(C)CC4)C(F)=CC1=C23)O
Shipping

Room temperature in continental US; may vary elsewhere.
Storage

4°C, protect from light

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

Solvent & Solubility
In Vitro: 

DMSO : 10 mg/mL (27.67 mM; Need ultrasonic; Hygroscopic DMSO has a significant impact on the solubility of product, please use newly opened DMSO)

H2O : ≥ 5 mg/mL (13.84 mM)

*"≥" means soluble, but saturation unknown.

Preparing
Stock Solutions
Concentration Solvent Mass 1 mg 5 mg 10 mg
1 mM 2.7672 mL 13.8362 mL 27.6725 mL
5 mM 0.5534 mL 2.7672 mL 5.5345 mL
View the Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

  • Molarity Calculator

  • Dilution Calculator

Mass (g) = Concentration (mol/L) × Volume (L) × Molecular Weight (g/mol)

Mass
=
Concentration
×
Volume
×
Molecular Weight *

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

This equation is commonly abbreviated as: C1V1 = C2V2

Concentration (start)

C1

×
Volume (start)

V1

=
Concentration (final)

C2

×
Volume (final)

V2

In Vivo:

Select the appropriate dissolution method based on your experimental animal and administration route.

For the following dissolution methods, please ensure to first prepare a clear stock solution using an In Vitro approach and then sequentially add co-solvents:
To ensure reliable experimental results, the clarified stock solution can be appropriately stored based on storage conditions. As for the working solution for in vivo experiments, it is recommended to prepare freshly and use it on the same day.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  10% DMSO    40% PEG300    5% Tween-80    45% Saline

    Solubility: ≥ 1 mg/mL (2.77 mM); Clear solution

    This protocol yields a clear solution of ≥ 1 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 mg/mL) to 400 μL PEG300, and mix evenly; then add 50 μL Tween-80 and mix evenly; then add 450 μL Saline to adjust the volume to 1 mL.

    Preparation of Saline: Dissolve 0.9 g sodium chloride in ddH₂O and dilute to 100 mL to obtain a clear Saline solution.
  • Protocol 2

    Add each solvent one by one:  10% DMSO    90% (20% SBE-β-CD in Saline)

    Solubility: ≥ 1 mg/mL (2.77 mM); Clear solution

    This protocol yields a clear solution of ≥ 1 mg/mL (saturation unknown).

    Taking 1 mL working solution as an example, add 100 μL DMSO stock solution (10.0 mg/mL) to 900 μL 20% SBE-β-CD in Saline, and mix evenly.

    Preparation of 20% SBE-β-CD in Saline (4°C, storage for one week): 2 g SBE-β-CD powder is dissolved in 10 mL Saline, completely dissolve until clear.

For the following dissolution methods, please prepare the working solution directly. It is recommended to prepare fresh solutions and use them promptly within a short period of time.
The percentages shown for the solvents indicate their volumetric ratio in the final prepared solution. If precipitation or phase separation occurs during preparation, heat and/or sonication can be used to aid dissolution.

  • Protocol 1

    Add each solvent one by one:  PBS

    Solubility: 10 mg/mL (27.67 mM); Clear solution; Need ultrasonic

In Vivo Dissolution Calculator
Please enter the basic information of animal experiments:

Dosage

mg/kg

Animal weight
(per animal)

g

Dosing volume
(per animal)

μL

Number of animals

Recommended: Prepare an additional quantity of animals to account for potential losses during experiments.
Please enter your animal formula composition:
%
DMSO +
% 
+
%
Tween-80 +
%
Saline
Recommended: Keep the proportion of DMSO in working solution below 2% if your animal is weak.
The co-solvents required include: DMSO, . All of co-solvents are available by MedChemExpress (MCE). , Tween 80. All of co-solvents are available by MedChemExpress (MCE).
Calculation results:
Working solution concentration: mg/mL
Method for preparing stock solution: mg drug dissolved in μL  DMSO (Stock solution concentration: mg/mL).

*In solvent : -80°C, 6 months; -20°C, 1 month (protect from light)

The concentration of the stock solution you require exceeds the measured solubility. The following solution is for reference only. If necessary, please contact MedChemExpress (MCE).
Method for preparing in vivo working solution for animal experiments: Take μL DMSO stock solution, add μL . μL , mix evenly, next add μL Tween 80, mix evenly, then add μL Saline.
 If the continuous dosing period exceeds half a month, please choose this protocol carefully.
Please ensure that the stock solution in the first step is dissolved to a clear state, and add co-solvents in sequence. You can use ultrasonic heating (ultrasonic cleaner, recommended frequency 20-40 kHz), vortexing, etc. to assist dissolution.
Purity & Documentation

Purity: 99.93%

COA (249 KB) HNMR (276 KB) LCMS (266 KB)

Handling Instructions (2659 KB)
References

  • [1]. Drlica K, et al. DNA gyrase, topoisomerase IV, and the 4-quinolones. Microbiol Mol Biol Rev. 1997 Sep;61(3):377-92.  [Content Brief]

    [2]. Smee DF, et al. A review of compounds exhibiting anti-orthopoxvirus activity in animal models. Antiviral Res. 2003 Jan;57(1-2):41-52.  [Content Brief]

    [3]. Rand A, et al. Effect of levofloxacin on some body tissues in mice. Effect of levofloxacin on some body tissues in mice. Iraqi Journal of Veterinary Sciences, 2021.

    [4]. JI B, et al. In vitro and in vivo activities of levofloxacin against Mycobacterium tuberculosis. Antimicrob Agents Chemother. 1995 Jun;39(6):1341-4.  [Content Brief]

  • [1]. Drlica K, et al. DNA gyrase, topoisomerase IV, and the 4-quinolones. Microbiol Mol Biol Rev. 1997 Sep;61(3):377-92.

    [2]. Smee DF, et al. A review of compounds exhibiting anti-orthopoxvirus activity in animal models. Antiviral Res. 2003 Jan;57(1-2):41-52.

    [3]. Rand A, et al. Effect of levofloxacin on some body tissues in mice. Effect of levofloxacin on some body tissues in mice. Iraqi Journal of Veterinary Sciences, 2021.

    [4]. JI B, et al. In vitro and in vivo activities of levofloxacin against Mycobacterium tuberculosis. Antimicrob Agents Chemother. 1995 Jun;39(6):1341-4.

Complete Stock Solution Preparation Table

* Please refer to the solubility information to select the appropriate solvent. Once prepared, please aliquot and store the solution to prevent product inactivation from repeated freeze-thaw cycles.
Storage method and period of stock solution: -80°C, 6 months; -20°C, 1 month (protect from light). When stored at -80°C, please use it within 6 months. When stored at -20°C, please use it within 1 month.

Optional Solvent Concentration Solvent Mass 1 mg 5 mg 10 mg 25 mg
H2O / DMSO 1 mM 2.7672 mL 13.8362 mL 27.6725 mL 69.1812 mL
5 mM 0.5534 mL 2.7672 mL 5.5345 mL 13.8362 mL
10 mM 0.2767 mL 1.3836 mL 2.7672 mL 6.9181 mL
DMSO 15 mM 0.1845 mL 0.9224 mL 1.8448 mL 4.6121 mL
20 mM 0.1384 mL 0.6918 mL 1.3836 mL 3.4591 mL
25 mM 0.1107 mL 0.5534 mL 1.1069 mL 2.7672 mL

* Note: If you choose water as the stock solution, please dilute it to the working solution, then filter and sterilize it with a 0.22 μm filter before use.

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Levofloxacin Related Classifications

  • Cell Cycle/DNA Damage Anti-infection
  • Topoisomerase DNA/RNA Synthesis Antibiotic Bacterial Orthopoxvirus
Help & FAQs

Keywords:

Levofloxacin100986-85-4(-)-OfloxacinTopoisomeraseDNA/RNA SynthesisAntibioticBacterialOrthopoxviruschronic periodontitisairway inflammationBK ViremiaDNA gyraseInhibitorinhibitorinhibit

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