Molecular Weight: 416.86 g/mol

KRN 633 Chemical Structure
Chemical Structure
Check the KRN 633 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 9 mg/mL (21.58 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 1-[2-chloro-4-(6,7-dimethoxyquinazolin-4-yl)oxyphenyl]-3-propylurea
CAS Number 286370-15-8
Molecular Formula

C20H21ClN4O4

Molecular Weight (MW) 416.86
SMILES CCCNC(=O)NC1=C(C=C(C=C1)OC2=NC=NC3=CC(=C(C=C32)OC)OC)Cl
InChIKey VPBYZLCHOKSGRX-UHFFFAOYSA-N
Note: Technical data last updated: Sep 1, 2026.