CAS No. 286370-15-8
Batch:
Purity:99.01
Chemical Structure
Check the
KRN 633
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
| 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 |
KRN 633 is a cell-permeable, ATP-competitive inhibitor of VEGFR1, VEGFR2, and VEGFR3, with weaker activity against PDGFR-α/β and c-Kit. It selectively suppresses VEGF-induced downstream signaling and endothelial cell proliferation without altering FGF-dependent pathways. Consequently, KRN 633 blocks vessel formation and vascular permeability, demonstrating significant antitumor activity in vivo. [1]
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Concentration
Volume
Mass
|
|---|
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 |
| 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 |
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).
Note: Technical data last updated: Sep 1, 2026.