CAS No. 943332-08-9
Batch:
Purity:99.83
Chemical Structure
Check the
Selumetinib sulfate
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
| IUPAC Name | 6-(4-bromo-2-chloroanilino)-7-fluoro-N-(2-hydroxyethoxy)-3-methylbenzimidazole-5-carboxamide;sulfuric acid | |
|---|---|---|
| CAS Number | 943332-08-9 | |
| Molecular Formula |
C17H15BrClFN4O3.H2O4S |
|
| Molecular Weight (MW) | 555.76 | |
| InChIKey | GRKFGZYYYYISDX-UHFFFAOYSA-N |
Selumetinib sulfate is an oral, non-ATP-competitive inhibitor of MEK1 (IC50 of 14 nM) and MEK2. By inhibiting MEK1/2 activity within the MAPK/ERK signaling pathway, it blocks downstream ERK1/2 phosphorylation. This pathway suppression leads to inhibited cell proliferation, induced apoptosis, and robust anti-tumor activity in preclinical cancer models, including HT-29 colon carcinoma xenografts. [1]
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Concentration
Volume
Mass
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Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
| Solvent | Solubility & Note |
|---|---|
| DMSO |
100 mg/mL
(179.93 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.