Molecular Weight: 519.28 g/mol

Regorafenib Hydrochloride Chemical Structure
Chemical Structure
Check the Regorafenib Hydrochloride 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 100 mg/mL (192.57 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water Insoluble
Ethanol 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).

Chemical Information

IUPAC Name 4-[4-[[4-chloro-3-(trifluoromethyl)phenyl]carbamoylamino]-3-fluorophenoxy]-N-methylpyridine-2-carboxamide;hydrochloride
CAS Number 835621-07-3
Molecular Formula

C21H16Cl2F4N4O3
Molecular Weight (MW) 519.28
SMILES Cl.CNC(=O)C1=NC=CC(=C1)OC2=CC(=C(NC(=O)NC3=CC(=C(Cl)C=C3)C(F)(F)F)C=C2)F
InChIKey ACSWJKPZXNIVMY-UHFFFAOYSA-N

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