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Levofloxacin N-oxide

Cat No.:V43922 Purity: ≥98%
Levofloxacin N-oxide is a secondary metabolite (SM, chemical compound) of Levofloxacin (Levofloxacin).
Levofloxacin N-oxide
Levofloxacin N-oxide Chemical Structure CAS No.: 117678-38-3
Product category: New3
This product is for research use only, not for human use. We do not sell to patients.
Size Price Stock Qty
5mg
10mg
100mg
Other Sizes
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Product Description
Levofloxacin N-oxide is a secondary metabolite (SM, chemical compound) of Levofloxacin (Levofloxacin). Levofloxacin N-oxide has no significant genotoxic risk. Levofloxacin is an orally bioactive antibiotic that has inhibitory activities on both Gram-positive (Gram+) and Gram-negative (Gram-) bacteria.
Levofloxacin N-oxide (CAS: 117678-38-3) is a chemically defined oxidation product and recognized pharmaceutical impurity of levofloxacin, a third-generation fluoroquinolone antibacterial agent. The molecular formula is C18H20FN3O5 and molecular weight is 377.37. It is a secondary metabolite and degradation product of levofloxacin that is formed through exposure to daylight or hydrogen peroxide. Levofloxacin N-oxide has no significant genotoxic risk. It is an inactive metabolite of the antibiotic levofloxacin. It is used as an impurity standard in pharmaceutical quality control.
Biological Activity I Assay Protocols (From Reference)
Targets
Levofloxacin N-oxide does not have significant biological activity as it is an inactive metabolite of levofloxacin. It is a degradation product and impurity rather than a pharmacologically active compound. It does not exhibit significant antibacterial activity. The compound is used as an impurity standard and reference material for analytical testing rather than as a therapeutic agent.
ln Vitro
Levofloxacin N-oxide does not have direct in vitro biological activity as it is an inactive metabolite. It has no significant antibacterial activity. It is used as a reference standard in analytical methods rather than in biological assays. Studies have shown that it has no significant genotoxic risk.
ln Vivo
Levofloxacin N-oxide does not have in vivo biological activity as it is an inactive metabolite. It is not intended for administration to animals or humans as a therapeutic. Its value is as an analytical standard for pharmaceutical quality control and impurity testing.
Enzyme Assay
In vitro assays for Levofloxacin N-oxide are primarily analytical rather than biological. HPLC and LC-MS methods are used to detect and quantify the compound as an impurity in levofloxacin drug substance and drug products. Genotoxicity assays may be performed to assess safety, but no significant genotoxic risk has been identified.
Cell Assay
Cell culture experiments are not applicable to Levofloxacin N-oxide as it is an inactive metabolite and impurity standard. The compound is not used in cell-based assays. Its primary application is in analytical chemistry for pharmaceutical quality control.
Animal Protocol
In vivo animal experiments are not applicable to Levofloxacin N-oxide as it is an inactive metabolite and impurity standard. The compound is not intended for administration to animals. Its value is as an analytical standard.
ADME/Pharmacokinetics
Pharmacokinetic properties are not applicable to Levofloxacin N-oxide as it is an inactive metabolite and impurity standard. The compound is not intended for administration to animals or humans. Its physicochemical properties include molecular weight 377.37 and molecular formula C18H20FN3O5. Storage: appropriately.
Toxicity/Toxicokinetics
Levofloxacin N-oxide has no significant genotoxic risk. As an impurity, its levels are controlled in pharmaceutical products. The compound is for research use only and is not for human therapeutic use. Standard laboratory safety precautions should be followed when handling the compound.
Additional Infomation
Levofloxacin N-oxide has CAS number 117678-38-3, molecular formula C18H20FN3O5, and molecular weight 377.37. It is a degradation product and impurity of levofloxacin. It is an inactive metabolite with no significant genotoxic risk. It is used as an impurity standard in pharmaceutical quality control. Not for human use; for research purposes only.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C18H20N3O5F
Molecular Weight
377.367
Exact Mass
377.138
CAS #
117678-38-3
PubChem CID
10970860
Appearance
Typically exists as solid at room temperature
LogP
-1.03
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
8
Rotatable Bond Count
2
Heavy Atom Count
27
Complexity
678
Defined Atom Stereocenter Count
1
SMILES
C[N+]1(CCN(C2=C(F)C=C3C(C(=CN4[C@H](COC2=C34)C)C(=O)O)=O)CC1)[O-]
InChi Key
MVLAUMUQGRQERL-JTQLQIEISA-N
InChi Code
InChI=1S/C18H20FN3O5/c1-10-9-27-17-14-11(16(23)12(18(24)25)8-21(10)14)7-13(19)15(17)20-3-5-22(2,26)6-4-20/h7-8,10H,3-6,9H2,1-2H3,(H,24,25)/t10-/m0/s1
Chemical Name
(2S)-7-fluoro-2-methyl-6-(4-methyl-4-oxidopiperazin-4-ium-1-yl)-10-oxo-4-oxa-1-azatricyclo[7.3.1.05,13]trideca-5(13),6,8,11-tetraene-11-carboxylic acid
HS Tariff Code
2934.99.9001
Storage

Powder      -20°C    3 years

                     4°C     2 years

In solvent   -80°C    6 months

                  -20°C    1 month

Shipping Condition
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
Solubility Data
Solubility (In Vitro)
May dissolve in DMSO (in most cases), if not, try other solvents such as H2O, Ethanol, or DMF with a minute amount of products to avoid loss of samples
Solubility (In Vivo)
Note: Listed below are some common formulations that may be used to formulate products with low water solubility (e.g. < 1 mg/mL), you may test these formulations using a minute amount of products to avoid loss of samples.

Injection Formulations
(e.g. IP/IV/IM/SC)
Injection Formulation 1: DMSO : Tween 80: Saline = 10 : 5 : 85 (i.e. 100 μL DMSO stock solution 50 μL Tween 80 850 μL Saline)
*Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH ₂ O to obtain a clear solution.
Injection Formulation 2: DMSO : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL DMSO 400 μLPEG300 50 μL Tween 80 450 μL Saline)
Injection Formulation 3: DMSO : Corn oil = 10 : 90 (i.e. 100 μL DMSO 900 μL Corn oil)
Example: Take the Injection Formulation 3 (DMSO : Corn oil = 10 : 90) as an example, if 1 mL of 2.5 mg/mL working solution is to be prepared, you can take 100 μL 25 mg/mL DMSO stock solution and add to 900 μL corn oil, mix well to obtain a clear or suspension solution (2.5 mg/mL, ready for use in animals).
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Injection Formulation 4: DMSO : 20% SBE-β-CD in saline = 10 : 90 [i.e. 100 μL DMSO 900 μL (20% SBE-β-CD in saline)]
*Preparation of 20% SBE-β-CD in Saline (4°C,1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution.
Injection Formulation 5: 2-Hydroxypropyl-β-cyclodextrin : Saline = 50 : 50 (i.e. 500 μL 2-Hydroxypropyl-β-cyclodextrin 500 μL Saline)
Injection Formulation 6: DMSO : PEG300 : castor oil : Saline = 5 : 10 : 20 : 65 (i.e. 50 μL DMSO 100 μLPEG300 200 μL castor oil 650 μL Saline)
Injection Formulation 7: Ethanol : Cremophor : Saline = 10: 10 : 80 (i.e. 100 μL Ethanol 100 μL Cremophor 800 μL Saline)
Injection Formulation 8: Dissolve in Cremophor/Ethanol (50 : 50), then diluted by Saline
Injection Formulation 9: EtOH : Corn oil = 10 : 90 (i.e. 100 μL EtOH 900 μL Corn oil)
Injection Formulation 10: EtOH : PEG300Tween 80 : Saline = 10 : 40 : 5 : 45 (i.e. 100 μL EtOH 400 μLPEG300 50 μL Tween 80 450 μL Saline)


Oral Formulations
Oral Formulation 1: Suspend in 0.5% CMC Na (carboxymethylcellulose sodium)
Oral Formulation 2: Suspend in 0.5% Carboxymethyl cellulose
Example: Take the Oral Formulation 1 (Suspend in 0.5% CMC Na) as an example, if 100 mL of 2.5 mg/mL working solution is to be prepared, you can first prepare 0.5% CMC Na solution by measuring 0.5 g CMC Na and dissolve it in 100 mL ddH2O to obtain a clear solution; then add 250 mg of the product to 100 mL 0.5% CMC Na solution, to make the suspension solution (2.5 mg/mL, ready for use in animals).
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Oral Formulation 3: Dissolved in PEG400
Oral Formulation 4: Suspend in 0.2% Carboxymethyl cellulose
Oral Formulation 5: Dissolve in 0.25% Tween 80 and 0.5% Carboxymethyl cellulose
Oral Formulation 6: Mixing with food powders


Note: Please be aware that the above formulations are for reference only. InvivoChem strongly recommends customers to read literature methods/protocols carefully before determining which formulation you should use for in vivo studies, as different compounds have different solubility properties and have to be formulated differently.

 (Please use freshly prepared in vivo formulations for optimal results.)
Preparing Stock Solutions 1 mg 5 mg 10 mg
1 mM 2.6499 mL 13.2496 mL 26.4992 mL
5 mM 0.5300 mL 2.6499 mL 5.2998 mL
10 mM 0.2650 mL 1.3250 mL 2.6499 mL

*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.

Calculator

Molarity Calculator allows you to calculate the mass, volume, and/or concentration required for a solution, as detailed below:

  • Calculate the Mass of a compound required to prepare a solution of known volume and concentration
  • Calculate the Volume of solution required to dissolve a compound of known mass to a desired concentration
  • Calculate the Concentration of a solution resulting from a known mass of compound in a specific volume
An example of molarity calculation using the molarity calculator is shown below:
What is the mass of compound required to make a 10 mM stock solution in 5 ml of DMSO given that the molecular weight of the compound is 350.26 g/mol?
  • Enter 350.26 in the Molecular Weight (MW) box
  • Enter 10 in the Concentration box and choose the correct unit (mM)
  • Enter 5 in the Volume box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 17.513 mg appears in the Mass box. In a similar way, you may calculate the volume and concentration.

Dilution Calculator allows you to calculate how to dilute a stock solution of known concentrations. For example, you may Enter C1, C2 & V2 to calculate V1, as detailed below:

What volume of a given 10 mM stock solution is required to make 25 ml of a 25 μM solution?
Using the equation C1V1 = C2V2, where C1=10 mM, C2=25 μM, V2=25 ml and V1 is the unknown:
  • Enter 10 into the Concentration (Start) box and choose the correct unit (mM)
  • Enter 25 into the Concentration (End) box and select the correct unit (mM)
  • Enter 25 into the Volume (End) box and choose the correct unit (mL)
  • Click the “Calculate” button
  • The answer of 62.5 μL (0.1 ml) appears in the Volume (Start) box
g/mol

Molecular Weight Calculator allows you to calculate the molar mass and elemental composition of a compound, as detailed below:

Note: Chemical formula is case sensitive: C12H18N3O4  c12h18n3o4
Instructions to calculate molar mass (molecular weight) of a chemical compound:
  • To calculate molar mass of a chemical compound, please enter the chemical/molecular formula and click the “Calculate’ button.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
  • Molecular mass (or molecular weight) is the mass of one molecule of a substance and is expressed in the unified atomic mass units (u). (1 u is equal to 1/12 the mass of one atom of carbon-12)
  • Molar mass (molar weight) is the mass of one mole of a substance and is expressed in g/mol.
/

Reconstitution Calculator allows you to calculate the volume of solvent required to reconstitute your vial.

  • Enter the mass of the reagent and the desired reconstitution concentration as well as the correct units
  • Click the “Calculate” button
  • The answer appears in the Volume (to add to vial) box
In vivo Formulation Calculator (Clear solution)
Step 1: Enter information below (Recommended: An additional animal to make allowance for loss during the experiment)
Step 2: Enter in vivo formulation (This is only a calculator, not the exact formulation for a specific product. Please contact us first if there is no in vivo formulation in the solubility section.)
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Calculation results

Working concentration mg/mL;

Method for preparing DMSO stock solution mg drug pre-dissolved in μL DMSO (stock solution 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 stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O,mix and clarify.

(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
             (2) Be sure to add the solvent(s) in order.

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