Posaconazole (also known as SCH 56592 or trade name of Noxafil) is a potent,broad-spectrum, second generation triazole antifungal compound that potently inhibits 14α-demethylation in a variety of fungi, including Candida and Aspergillus, with half maximal inhibition concentration IC50 of 0.007 μg/ml, 0.06 μg/ml, 0.2 μg/ml, 0.3 μg/ml, 0.03 μg/ml and 0.03 μg/ml respectively Posaconzole, an itraconzole derivative with fluorine replacing chlorine in the phenyl ring and hydroxylation in the side chain, binds to the heme cofactor on the active site of 14α-demethylase, which converts lanosterol to 14α-dimethy lanosterol, resulting in the disruption of the integrity and function of the fungal cell membrane and inhibition of fungal growth.