Pirodavir

Modify Date: 2024-01-03 18:49:22

Pirodavir Structure
Pirodavir structure
 Common Name Pirodavir
CAS Number 124436-59-5 Molecular Weight 369.457
Density 1.1±0.1 g/cm3 Boiling Point 572.0±40.0 °C at 760 mmHg
Molecular Formula C21H27N3O3 Melting Point 124-125℃
MSDS N/A Flash Point 299.8±27.3 °C

 Use of Pirodavir


Pirodavir is a potent, broad-spectrum picornavirus inhibitor, and is highly active against both group A and group B rhinovirus serotypes. Pirodavir is very potent in a virus yield reduction assay (IC90=2.3 nM).

 Names

Name ethyl 4-[2-[1-(6-methylpyridazin-3-yl)piperidin-4-yl]ethoxy]benzoate
Synonym More Synonyms

 Pirodavir Biological Activity

Description Pirodavir is a potent, broad-spectrum picornavirus inhibitor, and is highly active against both group A and group B rhinovirus serotypes. Pirodavir is very potent in a virus yield reduction assay (IC90=2.3 nM).
Related Catalog
Target

Rhinovirus[1]

In Vitro Pirodavir is a potent, broad-spectrum picornavirus inhibitor. Pirodavir inhibits 80 of the 100 human rhinovirus (HRV) strains tested at a concentration of 64 ng/mL. In that same study, Pirodavir is also effective in inhibiting 16 enteroviruses, with a mean 80% inhibitory concentration (IC80) of 1,300 ng/mL. Pirodavir inhibits enterovirus 71 replication with an IC50 of 5,420 nM and an IC90 of >13,350 nM. Pirodavir inhibits 56 rhinovirus laboratory strains and three of the clinical isolates tested. Pirodavir inhibits 59% of the serotypes and isolates with IC50s of <100 nM[1]. Pirodavir concentrations of 16 and 4μg/mL reduces cell growth by 66% (s.e.m. 0.75) and 28% (s.e.m. 0.25), respectively. Lower concentrations (1μg/mL) of Pirodavir are not inhibitory for cell growth. The 50% cytotoxic concentration of pirodavir for logarithmic cell growth at 37°C is 7μg/mL. Under the conditions of the antiviral assay (confluent HeLa cells at 33°C), the 50% cytotoxic concentration is >50μg/mL[2].
Cell Assay HeLa cells are seeded at a concentration of approximately 180,000 cells per dish in six-well plates containing 4 mL of growth medium. Growth medium consist of Eagle's basal medium, supplemented with 5% fetal calf serum, 2% sodium bicarbonate, and 1% glutamine. After 24 h of incubation at 37°C in a humidified CO2 atmosphere, the growth medium is removed and replaced by the test solutions (fresh growth medium with or without various concentrations of the antiviral compounds). To assess the cytotoxicity of the antiviral compounds (e.g., Pirodavir), the number of living cells are determined present in triplicate cultures at the time of Pirodavir addition and every 24 h for 3 days. Following trypsinization, the number of viable cells for each drug concentration is counted in triplicate with a Coulter Counter[2].
References

[1]. Barnard DL, et al. In vitro activity of expanded-spectrum pyridazinyl oxime ethers related to pirodavir: novel capsid-binding inhibitors with potent antipicornavirus activity. Antimicrob Agents Chemother. 2004 May;48(5):1766-72.

[2]. Andries K, et al. In vitro activity of pirodavir (R 77975), a substituted phenoxy-pyridazinamine with broad-spectrum antipicornaviralactivity. Antimicrob Agents Chemother. 1992 Jan;36(1):100-7.

 Chemical & Physical Properties

Density 1.1±0.1 g/cm3
Boiling Point 572.0±40.0 °C at 760 mmHg
Melting Point 124-125℃
Molecular Formula C21H27N3O3
Molecular Weight 369.457
Flash Point 299.8±27.3 °C
Exact Mass 369.205231
PSA 64.55000
LogP 3.94
Vapour Pressure 0.0±1.6 mmHg at 25°C
Index of Refraction 1.554

 Safety Information

Hazard Codes Xi

 Synonyms

Benzoic acid, 4-[2-[1-(6-methyl-3-pyridazinyl)-4-piperidinyl]ethoxy]-, ethyl ester
(METHYLPYRIDAZINE PIPERIDINE ETHYLOXYPHENYL)ETHYLACETATE
4-(2-(1-(6-Methyl-3-pyridazinyl)-4-piperidinyl)ethoxy)benzoic Acid Ethyl Ester
Ethyl 4-{2-[1-(6-methylpyridazin-3-yl)piperidin-4-yl]ethoxy}benzoate
pirodavir
ethyl 4-(2-(1-(6-methylpyridazin-3-yl)piperidin-4-yl)ethoxy)benzoate
Benzoic acid,4-(2-(1-(6-methyl-3-pyridazinyl)-4-piperidinyl)ethoxy)-,ethyl ester
Benzoic acid, 4-(2-(1-(6-methyl-3-pyridazinyl)-4-piperidinyl)ethoxy)-, ethyl ester
Pirodavirum
Ethyl 4-{2-[1-(6-methyl-3-pyridazinyl)-4-piperidinyl]ethoxy}benzoate
Ethyl p-(2-(1-(6-methyl-3-pyridazinyl)-4-piperidyl)ethoxy)benzoate
R 77975
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