CAS No. 895533-09-2
Batch:
Purity:99.98
Chemical Structure
Check the
4SC-203
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
| IUPAC Name | 1-(2-methoxy-5-methylphenyl)-3-[6-[[6-methoxy-7-[3-(4-methylpiperazin-1-yl)propoxy]quinazolin-4-yl]amino]-1,3-benzothiazol-2-yl]urea | |
|---|---|---|
| CAS Number | 895533-09-2 | |
| Molecular Formula |
C33H38N8O4S |
|
| Molecular Weight (MW) | 642.77 | |
| SMILES | COC1=C(NC(=O)NC2=NC3=C(S2)C=C(NC4=NC=NC5=CC(=C(OC)C=C45)OCCCN6CCN(C)CC6)C=C3)C=C(C)C=C1 | |
| InChIKey | MAFACRSJGNJHCF-UHFFFAOYSA-N |
4SC-203 is a multikinase inhibitor that selectively targets FMS-related tyrosine kinase 3 (FLT3), FLT3 mutated forms, and vascular endothelial growth factor receptors (VEGFRs). By disrupting FLT3- and VEGFR-mediated downstream signaling cascades, 4SC-203 blocks key pathways essential for tumor cell survival and microvascular development, resulting in suppressed cell proliferation and inhibited angiogenesis.
|
Concentration
Volume
Mass
|
|---|
Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
| Solvent | Solubility & Note |
|---|---|
| DMSO |
100 mg/mL
(155.57 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Ethanol | 12 mg/mL |
| Water | 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.