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PC945

Cat. No. M11173
PC945  Structure
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Quality Control & Documentation
Biological Activity

PC945 is a potent antifungal triazole drug that is resistant to a variety of sensitive and resistant strains of Aspergillus fumigatus. PC945 is a potent, tightly bound inhibitor of aspergilloxine 14α-demethylase (CYP51A/CYP51B) activity.IC50s are 0.23 μM and 0.22 μM, respectively.

Chemical Information
Molecular Weight 682.75
Formula C38H37F3N6O3
CAS Number 1931946-73-4
Solubility (25°C) DMSO ≥ 60 mg/mL
Storage Powder          -20°C   3 years ;  4°C   2 years
In solvent       -80°C   6 months ;  -20°C   1 month
Conversion of different model animals based on BSA (PMID: 27057123)
Species Mouse Rat Rabbit Guinea pig Hamster Dog
Weight (kg) 0.02 0.15 1.8 0.4 0.08 10
Body Surface Area (m2) 0.007 0.025 0.15 0.05 0.02 0.5
Km factor 3 6 12 8 5 20
Animal A (mg/kg) = Animal B (mg/kg) multiplied by  Animal B Km
Animal A Km

For example, to modify the dose of Compound A used for a mouse (20 mg/kg) to a dose based on the BSA for a rat, multiply 20 mg/kg by the Km factor for a mouse and then divide by the Km factor for a rat. This calculation results in a rat equivalent dose for Compound A of 10 mg/kg.

References

[1] Kazuhiro Ito, et al. Eur J Pharm Sci. Relationship between anti-fungal effects and lung exposure of PC945, a novel inhaled antifungal agent, in Aspergillus fumigatus infected mice: Pulmonary PK-PD analysis of anti-fungal PC945

[2] Alison Murray, et al. J Fungi (Basel). PC945, a Novel Inhaled Antifungal Agent, for the Treatment of Respiratory Fungal Infections

[3] Lindsey Cass, et al. Pharmacol Res Perspect. Safety and nonclinical and clinical pharmacokinetics of PC945, a novel inhaled triazole antifungal agent

[4] Shivaprakash M Rudramurthy, et al. J Antimicrob Chemother. In vitro antifungal activity of a novel topical triazole PC945 against emerging yeast Candida auris

[5] Thomas Colley, et al. Sci Rep. Antifungal synergy of a topical triazole, PC945, with a systemic triazole against respiratory Aspergillus fumigatus infection

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