CAS No. 1422500-60-4

Batch: Purity:97.04
Ziresovir Chemical Structure
Chemical Structure
Check the Ziresovir product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 1422500-60-4
Molecular Formula

C22H25N5O3S

Molecular Weight (MW) 439.53

Biological Activity

Ziresovir is an orally bioavailable small-molecule inhibitor targeting the respiratory syncytial virus (RSV) fusion (F) protein. By binding to the viral F glycoprotein, it prevents structural transitions required for viral envelope fusion with host cell membranes. This inhibition effectively blocks viral entry, viral replication, and syncytium formation in infected target cells, thereby disrupting the viral entry pathway. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 12 mg/mL (27.3 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 5 mg/mL
Water Insoluble
FAQ
Q: Why does a DMSO stock precipitate in media/saline?
A: It is caused by unheated aqueous media (supersaturation), local solvent shock, or incorrect mixing sequence.
How to fix it?
  • Preheat media/saline to 37°C.
  • Mix rapidly (pipette/vortex) upon addition.
  • For complex mixes, always add the aqueous phase last.
  • Re-dissolve minor precipitates with a 37°C water bath and sonication (≤30 min).

Reference

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Note: Technical data last updated: Sep 1, 2026.