≥98% (HPLC)

2R,3S-2-(2,4-Difluorophenyl)-3-(5-fluoropyrimidin-4-yl)-1-(1H-1,2,4-triazol-1-yl)butan-2-ol, UK-109496
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level


≥98% (HPLC)


white powder




DMSO: >20 mg/mL



storage temp.

room temp

SMILES string




InChI key


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General description

Voriconazole is a triazole and a synthetic derivative of fluconazole.


Voriconazole has been used:
  • as a control and Erg11 inhibitor in YPD medium
  • as a reference drug to test the activity of essential oils against clinical strains of Candida sp.
  • as an antifungal agent to test its interactions with valproic acid (VPA)
  • to compare its in vitro antifungal activity with essential oils and its components against Cryptococcus neoformans azole-susceptible and not-susceptible clinical isolates


5 mg in glass bottle
25 mg in poly bottle

Biochem/physiol Actions

Voriconazole is used to treat invasive aspergillosis (IA). It is vigorous against Candida species, including the strains of Candida albicans, which shows resistance to fluconazole.
Voriconazole is an antifungal used to treat serious fungal infections. Voriconazole inhibits ergosterol synthesis by inhibiting CYP450-dependent 14-α sterol demethylase resulting in a depletion of ergosterol in fungal cell membranes.

Features and Benefits

This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®1280), a biologically annotated collection of high-quality, ready-to-screen compounds. Click here to learn more.
This compound is also offered as part of Sigma′s Library of Pharmacologically Active Compounds (LOPAC®Pfizer), a collection of 90 Pfizer-developed drugs and research tools. Click here to learn more.

Other Notes

This compound was developed by Pfizer for Immunology research. To learn more about Sigma′s partnership with Pfizer and view other authentic, high-quality Pfizer compounds, visit sigma.com/bsm-pfizer.

To browse the list of other pharma-developed compounds and Approved Drugs/Drug Candidates, click here.

Legal Information

Sold for research purposes under agreement from Pfizer Inc.
LOPAC is a registered trademark of Sigma-Aldrich Co. LLC
Pfizer is a registered trademark of Pfizer, Inc.


Skull and crossbonesHealth hazard

Signal Word


Target Organs



UN 2811 6.1 / PGIII

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis
Certificate of Origin
Voriconazole: a new triazole antifungal agent
Saravolatz L D, et al.
Clinical Infectious Diseases, 36(5), 630-637 (2003)
Kim Vanstraelen et al.
Clinical pharmacokinetics, 54(11), 1151-1160 (2015-04-26)
Therapeutic drug monitoring (TDM) of voriconazole is increasingly being implemented in clinical practice. However, as blood sampling can be difficult in paediatric and ambulatory patients, a non-invasive technique for TDM is desirable. The aim of this study was to compare...
Voriconazole and posaconazole therapeutic drug monitoring: a retrospective study
Whitley M Y, et al.
Annals of Clinical Microbiology and Antimicrobials, 16(1), 60-60 (2017)
Identification and evaluation of novel acetolactate synthase inhibitors as antifungal agents
Richie D L, et al.
Antimicrobial agents and chemotherapy, 57(5), 2272-2280 (2013)
pH-dependant antifungal activity of valproic acid against the human fungal pathogen Candida albicans
Chaillot J, et al.
Frontiers in Microbiology, 8, 1956-1956 (2017)
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