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Fipronil sulfone

Cat No.:V21035 Purity: ≥98%
Fipronil Sulfone is a sulfone metabolite of Fipronil,which is a phenylpyrazole-based insecticide witha broad-spectrum insecticidal activity.
Fipronil sulfone
Fipronil sulfone Chemical Structure CAS No.: 120068-36-2
Product category: New12
This product is for research use only, not for human use. We do not sell to patients.
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Product Description
Fipronil Sulfone is a sulfone metabolite of Fipronil, which is a phenylpyrazole-based insecticide with a broad-spectrum insecticidal activity. It acts by disrupting the insect CNS/central nervous system by blocking GABA-gated chloride channels and glutamate-gated chloride channels, leading to central nervous system toxicity. Fipronil can be used to kill parasites such as fleas and lice on cats and dogs.
Fipronil sulfone is the major and most persistent metabolite of the phenylpyrazole insecticide fipronil. It is formed through the oxidation of fipronil in the environment and in living organisms. Fipronil sulfone has a molecular weight of 453.15 and a molecular formula of C₁₂H₄Cl₂F₆N₄O₂S.
Biological Activity I Assay Protocols (From Reference)
Targets
Fipronil sulfone shares a similar mechanism of action with its parent compound, acting as an inhibitor of GABA-gated chloride channels and glutamate-gated chloride channels. It selectively inhibits GABA receptors with an IC₅₀ of 175 nM (assayed by displacement of [³H]EBOB from the noncompetitive blocker site). It is also an inhibitor of rat α1β2γ2L GABA(A) receptor.
ln Vitro
Fipronil sulfone selectively inhibits GABA receptors with an IC₅₀ of 175 nM in radioligand binding assays. It acts by blocking GABA-gated chloride channels and glutamate-gated chloride channels in the insect nervous system. The compound retains potent insecticidal activity and is considered a major contributor to the overall toxicity of fipronil in target and non-target organisms.
ln Vivo
Fipronil sulfone is the major and most persistent metabolite of fipronil and contributes to the insecticidal activity of the parent compound. It is formed in the environment and in animals following fipronil exposure. The metabolite is more persistent than fipronil itself and can accumulate in the food chain, raising environmental and toxicological concerns.
Enzyme Assay
For non-cellular receptor binding assays, fipronil sulfone's affinity for GABA receptors can be evaluated using radioligand binding displacement studies. Membrane preparations from insect or mammalian brain are incubated with [³H]EBOB and varying concentrations of fipronil sulfone. The IC₅₀ for displacement of [³H]EBOB is determined from dose-response curves. This assay measures binding to the noncompetitive blocker site of the GABA receptor.
Cell Assay
In vitro cellular assays for fipronil sulfone involve treating neuronal cultures or cells expressing GABA receptors with the compound and measuring chloride flux or GABA-gated currents. Electrophysiological recordings (patch-clamp) can be used to assess the inhibition of GABA-induced currents. The metabolite's potency is compared to that of the parent compound fipronil to understand its contribution to overall toxicity.
Animal Protocol
In vivo animal experiments with fipronil sulfone are conducted to assess its toxicological profile and environmental persistence. Rodents are administered fipronil sulfone orally or intraperitoneally, and toxicological endpoints such as neurotoxicity, hepatotoxicity, and reproductive effects are evaluated. The compound's persistence in tissues and its potential for bioaccumulation are also studied.
ADME/Pharmacokinetics
Metabolism / Metabolites
Fipronil sulfone is a known human metabolite of (+)-fipronil.
Fipronil sulfone has a molecular weight of 453.15 and a molecular formula of C₁₂H₄Cl₂F₆N₄O₂S. It is a white to off-white solid with a density of 1.9±0.1 g/cm³ and a boiling point of 531.6±50.0°C. It has a logP of 7.44, indicating high lipophilicity. The compound is stable under normal storage conditions and is stored at -20°C.
Toxicity/Toxicokinetics
Fipronil sulfone is the major metabolite of fipronil and is more persistent in the environment. It has been detected in various environmental matrices and biological samples. The metabolite exhibits potent insecticidal activity and can contribute to the overall toxicity of fipronil. It has been reported to be a marine xenobiotic metabolite and has potential toxicological effects on non-target organisms.
Additional Infomation
Fipronil sulfone belongs to the pyrazole class of compounds, with the structure 1H-pyrazole, substituted at positions 1, 3, 4, and 5 by 2,6-dichloro-4-(trifluoromethyl)phenyl, cyano, (trifluoromethyl)sulfonyl, and amino groups, respectively. It is a metabolite of the pesticide fipronil and also a marine xenobiotic metabolite. It belongs to the pyrazole, dichlorobenzene, nitrile, (trifluoromethyl)benzene, and sulfone classes of compounds. Fipronil sulfone has been reported to be detected in Streptomyces rochei, and relevant data are available for reference.
Fipronil sulfone is the major and most persistent metabolite of the insecticide fipronil. It is formed through the oxidation of fipronil and retains potent insecticidal activity. The compound is used as an analytical standard for environmental monitoring and as a research tool for studying the metabolism and toxicology of fipronil. It is available from various commercial suppliers for research applications.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C12H4N4O2F6SCL2
Molecular Weight
453.14716
Exact Mass
451.933
CAS #
120068-36-2
PubChem CID
3078139
Appearance
White to off-white solid powder
Density
1.9±0.1 g/cm3
Boiling Point
531.6±50.0 °C at 760 mmHg
Flash Point
275.3±30.1 °C
Vapour Pressure
0.0±1.4 mmHg at 25°C
Index of Refraction
1.592
LogP
7.44
Hydrogen Bond Donor Count
1
Hydrogen Bond Acceptor Count
11
Rotatable Bond Count
2
Heavy Atom Count
27
Complexity
706
Defined Atom Stereocenter Count
0
SMILES
NC1N(C2C(Cl)=CC(C(F)(F)F)=CC=2Cl)N=C(C#N)C=1S(C(F)(F)F)(=O)=O
InChi Key
LGHZJDKSVUTELU-UHFFFAOYSA-N
InChi Code
InChI=1S/C12H4Cl2F6N4O2S/c13-5-1-4(11(15,16)17)2-6(14)8(5)24-10(22)9(7(3-21)23-24)27(25,26)12(18,19)20/h1-2H,22H2
Chemical Name
5-amino-1-[2,6-dichloro-4-(trifluoromethyl)phenyl]-4-(trifluoromethylsulfonyl)pyrazole-3-carbonitrile
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 2.2068 mL 11.0339 mL 22.0677 mL
5 mM 0.4414 mL 2.2068 mL 4.4135 mL
10 mM 0.2207 mL 1.1034 mL 2.2068 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

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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)
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  • 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:
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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.
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  • 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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