For research use only.
Catalog No.S2476 Synonyms: R 51211
CAS No. 84625-61-6
Itraconazole (R 51211) is a relatively potent inhibitor of CYP3A4 with IC50 of 6.1 nM, used as a triazole antifungal agent. Itraconazole is a potent antagonist of the Hedgehog (Hh) signaling pathway. Itraconazole suppresses the growth of glioblastoma through induction of autophagy.
Selleck's Itraconazole has been cited by 18 publications
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Resistance to itraconazole in MA cells. The parental SUM149-Luc cell line and MA1 cells were treated in parallel with 1 mM itraconazole for 9 days (which killed most of the cells in the parental cell line) and were allowed to recover and grow in a drug-free medium for 5 days before being stained. Since itraconazole was ineffective in killing MA1 cells, the cells grew into a continuous monolayer rather than colonies.
PLoS One, 2014, 9(10):e109487.. Itraconazole purchased from Selleck.
MCF-7 and SKBR-3 cells were treated as indicated and morphology of autophagosomes was observed with TEM (C). Autophagosomes (Avi, immature autophagic vacuoles, bold arrow), autolysosomes (Avd, degraded/late autophagic vacuoles, sharp arrow).
Cancer Lett, 2017, 385:128-136. Itraconazole purchased from Selleck.
Purity & Quality Control
Choose Selective Hedgehog/Smoothened Inhibitors
|Description||Itraconazole (R 51211) is a relatively potent inhibitor of CYP3A4 with IC50 of 6.1 nM, used as a triazole antifungal agent. Itraconazole is a potent antagonist of the Hedgehog (Hh) signaling pathway. Itraconazole suppresses the growth of glioblastoma through induction of autophagy.|
Itraconazole is metabolized into hydroxy-itraconazole (OH-ITZ), a known in vivo metabolite of ITZ, and two new metabolites: keto-itraconazole (keto-ITZ) and N-desalkyl-itraconazole (ND-ITZ). Itraconazole is a substrate for CYP3A in vitro and to characterize the metabolites generated. Itraconazole exhibits an unbound Km of 3.9 nM for CYP3A. Itraconazole metabolites are as potent as or more potent CYP3A4 inhibitors than ITZ itself.  Itraconazole appears to act on the essential Hh pathway component Smoothened (SMO) by a mechanism distinct from that of cyclopamine and other known SMO antagonists, and prevents the ciliary accumulation of SMO normally caused by Hh stimulation.  Itraconazole is active against 60 clinical isolates of Aspergillus spp. with geometric mean (GM) MICs of 0.25 mg/mL.  Itraconazole acts primarily by impairing the synthesis of ergosterol, resulting in a defective fungal cell membrane with altered permeability and function. Itraconazole is effective for a wide variety of mycotic infections and some fungal meningeal infections.  Itraconazole has an affinity for mammalian cytochrome P-450 enzymes as well as for fungal P-450-dependent enzyme, and thus has the potential for clinically important interactions (e.g., astemizole, terfenadine, rifampin, oral contraceptives, H2 receptor antagonists, warfarin, cyclosporine). 
|In vivo||Itraconazole, like other Hh pathway antagonists, can suppress Hh pathway activity and the growth of medulloblastoma in a mouse allograft model. |
-  Isoherranen N, et al. Drug Metab Dispos, 2004, 32(10), 1121-1131.
-  Kim J, et al. Cancer Cell, 2010, 17(4), 388-399.
-  Oakley KL, et al. Antimicrob Agents Chemother, 1997, 41(5), 1124-1126.
|In vitro||DMSO||7 mg/mL warmed (9.91 mM)|
|In vivo||Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
5% DMSO+40% PEG 300+10% Tween 80+45% ddH2O
For best results, use promptly after mixing.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
In vivo Formulation Calculator (Clear solution)
|Step 1: Enter information below (Recommended: An additional animal making an allowance for loss during the experiment)|
|Dosage||mg/kg||Average weight of animals||g||Dosing volume per animal||ul||Number of animals|
|Step 2: Enter the in vivo formulation ()|
|% DMSO % % Tween 80 % ddH2O|
Working concentration： mg/ml；
Method for preparing DMSO master liquid: ： mg drug pre-dissolved in μL DMSO (Master liquid concentration mg/mL，)
Method for preparing in vivo formulation：Take DMSO master liquid, next addμL PEG300， mix and clarify, next addμL Tween 80，mix and clarify, next add μL ddH2O，mix and clarify.
1.Please make sure the liquid is clear before adding the next solvent.
2.Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such as vortex, ultrasound or hot water bath can be used to aid dissolving.
Calculate the mass, volume or concentration required for a solution. The Selleck molarity calculator is based on the following equation:
Mass (mg) = Concentration (mM) × Volume (mL) × Molecular Weight (g/mol)
*When preparing stock solutions, please always use the batch-specific molecular weight of the product found on the via label and MSDS / COA (available on product pages).
Calculate the dilution required to prepare a stock solution. The Selleck dilution calculator is based on the following equation:
Concentration (start) x Volume (start) = Concentration (final) x Volume (final)
This equation is commonly abbreviated as: C1V1 = C2V2 ( Input Output )
* When preparing stock solutions always use the batch-specific molecular weight of the product found on the vial label and MSDS / COA (available online).
Molecular Weight Calculator
Enter the chemical formula of a compound to calculate its molar mass and elemental composition:
Tip: Chemical formula is case sensitive. C10H16N2O2 c10h16n2o2
Instructions to calculate molar mass (molecular weight) of a chemical compound:
To calculate molar mass of a chemical compound, please enter its chemical formula and click 'Calculate'.
Definitions of molecular mass, molecular weight, molar mass and molar weight:
Molecular mass (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.
Clinical Trial Information
|NCT Number||Recruitment||interventions||Conditions||Sponsor/Collaborators||Start Date||Phases|
|NCT04312282||Recruiting||Drug: Tesetaxel|Drug: Itraconazole|Drug: Rifampin||Advanced Solid Tumors||Odonate Therapeutics Inc.||March 6 2020||Phase 1|
|NCT04121910||Completed||Drug: Savolitinib|Drug: Itraconazole||Solid Tumour||AstraZeneca|Parexel||November 7 2019||Phase 1|
|NCT04166669||Completed||Drug: APX001|Drug: Itraconazole|Drug: Rifampin||Fungal Infection||Amplyx Pharmaceuticals||November 12 2019||Phase 1|
|NCT03923010||Recruiting||Drug: Itraconazole||Mycoses||Janssen Research & Development LLC||August 6 2019||Phase 4|
|NCT03960606||Terminated||Combination Product: PUR1900||Asthma||Pulmatrix Inc.||July 31 2019||Phase 2|
Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.
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Frequently Asked Questions
We are finding the best vehicle to administer Itraconazole to mice. We want a mild vehicle (unlike DMSO) which resembles water, PBS, saline (for i.p/ injection) or methyl cellulose (for oral).
We are not able to dissolve S2476 Itraconazole clearly without DMSO. For oral gavage, this compound can be dissolved in 1% CMC Na at 20mg/ml as a homogeneous suspension.