Licensed by Pfizer Catalog No.S1331 Synonyms: UK 49858

Fluconazole Chemical Structure

Molecular Weight(MW): 306.27

Fluconazole is a fungal lanosterol 14 alpha-demethylase inhibitor, which thereby prevents the formation of ergosterol,used in the treatment and prevention of superficial and systemic fungal infections.

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Biological Activity

Description Fluconazole is a fungal lanosterol 14 alpha-demethylase inhibitor, which thereby prevents the formation of ergosterol,used in the treatment and prevention of superficial and systemic fungal infections.
lanosterol 14 alpha-demethylase [1]
In vitro

Fluconazole in combination with amphotericin B (AmB) has a synergistic effect on C. albicans planktonic cells but does not alter AmB activity against biofilms. Fluconazole and caspofungin have an antagonistic effect against biofilms but not with planktonic cells. Fluconazole-mediated membrane perturbation (due to inhibition of ergosterol biosynthesis) increases calcineurin inhibitor intracellular concentrations. Fluconazole treatment significantly reduces levels of ergosterol within the cell in C. albicans planktonic cells, leading to cell membrane perturbation. [1] Fluconazole activity is less sensitive to acidic medium than is that of ketoconazole. Fluconazole is approximately 16-fold less active than ketoconazole against 35 representative isolates of C. albicans at physiologic pH. [2] Fluvastatin, a cholesterol-lowering drug, exhibits minimal activity (MICs of 64 to >128 mg/mL) against Candida species and Cryptococcus neoformans. Fluconazole combined with itraconazole exhibits potent activities against C. albicans, C. tropicalis, C. parapsilosis, and C. neoformans, including flucon- azole-resistant strains of C. albicans and C. tropicalis. [3]

In vivo Fluconazole is very effective in prolonging survival of rats infected with a representative candidal strain. [3] Fluconazole has a dramatic effect on the fungicidal activity of flucytosine in murine cryptococcal meningitis. Fluconazole combined with flucytosine and amphotericin B have significantly improved activity against cryptococcal meningitis compared with the activity of each drug used alone. [4]


Solubility (25°C)

In vitro DMSO 61 mg/mL (199.17 mM)
Ethanol 61 mg/mL (199.17 mM)
Water Insoluble
In vivo Add solvents to the product individually and in order(Data is from Selleck tests instead of citations):
2% DMSO+30% PEG 300+2% Tween 80+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.

Chemical Information

Molecular Weight 306.27


CAS No. 86386-73-4
Storage powder
in solvent
Synonyms UK 49858

Bio Calculators

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Clinical Trial Information

NCT Number Recruitment Conditions Sponsor/Collaborators Start Date Phases
NCT01950507 Recruiting Stem Cell Transplantation|Graft vs Host Disease National Institutes of Health Clinical Center (CC)|National Heart, Lung, and Blood Institute (NHLBI) August 31, 2013 Phase 1
NCT02663674 Recruiting Coccidioidomycosis National Institute of Allergy and Infectious Diseases (NIAID) December 29, 2015 Phase 4
NCT03002012 Not yet recruiting Cryptococcosis|Cryptococcal Infections|AIDS-Related Opportunistic Infections University of Minnesota - Clinical and Translational Science Institute|Infectious Diseases Institute, Uganda|National Institute of Allergy and Infectious Diseases (NIAID)|Mbarara University of Science and Technology March 2017 Phase 3
NCT03036046 Not yet recruiting Acute Myeloid Leukemia F2G Ltd.|The Clinical Trials Centre Cologne|Klinik für Hämatologie, Aachen|Medizinische Klinik Würzburg March 2017 Phase 1|Phase 2
NCT03028103 Not yet recruiting Diffuse Large B Cell Lymphoma|Primary Mediastinal Lymphoma|Mantle Cell Lymphoma Epizyme, Inc. January 2017 Phase 1
NCT02971007 Recruiting Vulvovaginitis|Yeast Infection|Yeast Infection Vaginal|Candidiasis, Vulvovaginal Matinas BioPharma Nanotechnologies, Inc. November 2016 Phase 2

Tech Support

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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P450 (e.g. CYP17) Signaling Pathway Map

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Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID