Molecular Weight: 445.61 g/mol

Lomibuvir (VX-222) Chemical Structure
Chemical Structure
Check the Lomibuvir (VX-222) product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

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 89 mg/mL (199.72 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 89 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).
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Pre-aliquoted for Longevity: Solid-state aliquots offer longer shelf life compared to stock solutions.

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Chemical Information

IUPAC Name 5-(3,3-dimethylbut-1-ynyl)-3-[(4-hydroxycyclohexyl)-(4-methylcyclohexanecarbonyl)amino]thiophene-2-carboxylic acid
CAS Number 1026785-59-0
Molecular Formula

C25H35NO4S

Molecular Weight (MW) 445.61
SMILES CC1CCC(CC1)C(=O)N(C2CCC(CC2)O)C3=C(SC(=C3)C#CC(C)(C)C)C(=O)O
InChIKey WPMJNLCLKAKMLA-UHFFFAOYSA-N

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