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Isoflupredone Acetate

Cat No.:V41608 Purity: ≥98%
Isoflupredone acetate is a corticosteroid with anti~inflammatory activity.
Isoflupredone Acetate
Isoflupredone Acetate Chemical Structure CAS No.: 338-98-7
Product category: New3
This product is for research use only, not for human use. We do not sell to patients.
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Product Description
Isoflupredone acetate is a corticosteroid with anti~inflammatory activity. Isoflupredone acetate may be utilized to study ketosis, musculoskeletal diseases, allergies, infections, inflammation and other diseases in cattle, horses, pigs and other animals.
Isoflupredone Acetate is a synthetic, fluorinated glucocorticoid corticosteroid. It has a molecular weight of 420.47 g/mol, a formula of C23H29FO6, and a CAS number of 338-98-7. The compound is chemically known as 21-Acetoxy-9-fluoro-11β,17-dihydroxypregna-1,4-diene-3,20-dione or 9-Fluoro-Prednisolone-21-Acetate. It is supplied as the 21-acetate ester of isoflupredone and is used primarily in veterinary medicine.
Biological Activity I Assay Protocols (From Reference)
Targets
Isoflupredone Acetate targets the glucocorticoid receptor. As a corticosteroid with both glucocorticoid and mineralocorticoid activity, it binds to the glucocorticoid receptor and modulates gene expression through transactivation and transrepression mechanisms. This leads to potent anti-inflammatory and gluconeogenic activities. The compound also has mineralocorticoid effects that can affect electrolyte balance.
ln Vitro
Low concentrations of isofluradone acetate (10-4, 10-7, or 10-10 M; 48 or 96 hours) decrease IL-1β. The effects of 1β (10-7 M and 10-10 M) on inflammation and catabolism are larger than those at high concentrations (10-4 M) [1].
In vitro, Isoflupredone Acetate demonstrates potent topical anti-inflammatory activity. As a glucocorticoid, it inhibits the production of pro-inflammatory cytokines and mediators such as prostaglandins and leukotrienes. The compound's fluorination at the 9-position enhances its potency compared to non-fluorinated corticosteroids.
ln Vivo
Isoflurdone acetate (0.05 mg/kg; IM; days 2 and 4 postchallenge) reduces the reduction in dry matter intake and average daily weight gain and induces hemolytic Mannheimia when paired with oxytetracycline. Clinical improvement in Heimia infection is faster [2].
In vivo, Isoflupredone Acetate is used as a veterinary therapeutic agent with potent anti-inflammatory activity. It is used for the treatment of ketosis, musculoskeletal disorders, hypersensitivity, infections, and inflammatory diseases in cows, horses, pigs, and other large animals. However, it has been shown to increase the frequency of severe hypokalemia in healthy cows.
Enzyme Assay
The in vitro receptor binding assay for Isoflupredone Acetate involves measuring its affinity for the glucocorticoid receptor. Competitive binding assays are performed using radiolabeled dexamethasone or other glucocorticoid ligands. The compound's potency is determined by its ability to displace the labeled ligand from the receptor.
Cell Assay
Cellular assays for Isoflupredone Acetate are performed using glucocorticoid-responsive cell lines. Cells are treated with the compound at varying concentrations, and glucocorticoid receptor-mediated gene expression is assessed by measuring the expression of target genes such as GILZ or MKP-1. Anti-inflammatory activity is assessed by measuring the inhibition of cytokine production in stimulated cells.
Animal Protocol
Animal/Disease Models: 96 weaned heifers (bronchopneumonia was induced by intrabronchial infusion of Mannheimia haemolytica) [2]
Doses: 0.05 mg/kg
Route of Administration: intramuscularinjection; days 2 and 4 after challenge
Experimental Results: Infection resulted in diminished dry matter intake and average daily gain (ADG) in heifers. When combined with oxytetracycline, these reductions are prevented and result in faster clinical improvement.
In vivo animal studies for Isoflupredone Acetate are conducted in veterinary species including cows, horses, and pigs. The compound is administered by injection or topically. Efficacy is assessed by measuring clinical signs of inflammation, pain, or disease resolution. Safety studies monitor electrolyte levels, particularly potassium, due to the risk of hypokalemia.
ADME/Pharmacokinetics
Isoflupredone Acetate is administered parenterally or topically in veterinary medicine. As a corticosteroid, it has relatively rapid onset of action. The compound is metabolized in the liver and excreted by the kidneys. Specific PK parameters such as half-life, bioavailability, and clearance are not detailed in the available sources.
Toxicity/Toxicokinetics
Isoflupredone Acetate has dose-dependent toxicity related to its corticosteroid activity. Adverse effects include hypokalemia (low blood potassium), which can be severe in cows. Other potential side effects include immunosuppression, delayed wound healing, and exacerbation of infections. The compound should be used with caution in animals with diabetes, renal impairment, or infections.
References
[1]. Trahan RA, et al. In vitro effects of three equimolar concentrations of methylprednisolone acetate, triamcinolone acetonide, and isoflupredone acetate on equine articular tissue cocultures in an inflammatory environment. Am J Vet Res. 2018 Sep;79(9):933-940.
[2]. Hewson J, et al. Impact of isoflupredone acetate treatment on clinical signs and weight gain in weanling heifers with experimentally induced Mannheimia haemolytica bronchopneumonia. Am J Vet Res. 2011 Dec;72(12):1613-21.
Additional Infomation
9α-Fluoro-11β,17α,21-Trihydroxypregn-1,4-diene-3,20-dione 21-acetate is a corticosteroid hormone. See also: Isoflurane (contains the active ingredient); Isoflurane acetate; Neomycin sulfate (one of the components)... See more...
Isoflupredone Acetate is a veterinary corticosteroid used for the treatment of inflammatory conditions in large animals. It is available as a pharmaceutical product for veterinary use and is also available from chemical suppliers for research purposes. The compound is not approved for human use. It serves as a potent anti-inflammatory agent in veterinary medicine.
These protocols are for reference only. InvivoChem does not independently validate these methods.
Physicochemical Properties
Molecular Formula
C23H29FO6
Molecular Weight
420.47
Exact Mass
420.194
CAS #
338-98-7
PubChem CID
224246
Appearance
White to off-white solid powder
Density
1.3±0.1 g/cm3
Boiling Point
576.5±50.0 °C at 760 mmHg
Melting Point
244-246 °C
Flash Point
302.5±30.1 °C
Vapour Pressure
0.0±3.6 mmHg at 25°C
Index of Refraction
1.577
LogP
2.46
Hydrogen Bond Donor Count
2
Hydrogen Bond Acceptor Count
7
Rotatable Bond Count
4
Heavy Atom Count
30
Complexity
879
Defined Atom Stereocenter Count
7
SMILES
CC(=O)OCC(=O)[C@]1(CC[C@H]2[C@@H]3CCC4=CC(=O)C=C[C@]4(C)[C@]3([C@H](C[C@@]21C)O)F)O
InChi Key
ZOCUOMKMBMEYQV-GSLJADNHSA-N
InChi Code
InChI=1S/C23H29FO6/c1-13(25)30-12-19(28)22(29)9-7-16-17-5-4-14-10-15(26)6-8-20(14,2)23(17,24)18(27)11-21(16,22)3/h6,8,10,16-18,27,29H,4-5,7,9,11-12H2,1-3H3/t16-,17-,18-,20-,21-,22-,23-/m0/s1
Chemical Name
[2-[(8S,9R,10S,11S,13S,14S,17R)-9-fluoro-11,17-dihydroxy-10,13-dimethyl-3-oxo-6,7,8,11,12,14,15,16-octahydrocyclopenta[a]phenanthren-17-yl]-2-oxoethyl] acetate
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)
DMSO : ~125 mg/mL (~297.29 mM)
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 2.3783 mL 11.8915 mL 23.7829 mL
5 mM 0.4757 mL 2.3783 mL 4.7566 mL
10 mM 0.2378 mL 1.1891 mL 2.3783 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?
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  • Enter 5 in the Volume box and choose the correct unit (mL)
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  • 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:
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  • 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

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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:
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  • 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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