CAS No. 863774-58-7
Batch:
Purity:99.54
Chemical Structure
Check the
Dimethylenastron
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
Chemical Information
| IUPAC Name | 4-(3-hydroxyphenyl)-7,7-dimethyl-2-sulfanylidene-3,4,6,8-tetrahydro-1H-quinazolin-5-one | |
|---|---|---|
| CAS Number | 863774-58-7 | |
| Molecular Formula |
C16H18N2O2S |
|
| Molecular Weight (MW) | 302.39 | |
| SMILES | CC1(CC2=C(C(NC(=S)N2)C3=CC(=CC=C3)O)C(=O)C1)C | |
| InChIKey | RUOOPLOUUAYNPY-UHFFFAOYSA-N |
Biological Activity
Dimethylenastron is a potent, specific, and reversible inhibitor of kinesin Eg5 (IC50 =. By inhibiting Eg5, it disrupts mitotic spindle bipolarity, leading to the formation of monopolar spindles, cell cycle arrest in the G2/M phase, and subsequent induction of apoptosis. In cellular models, Eg5 inhibition by dimethylenastron blocks proper chromosome segregation during mitosis and suppresses tumor cell proliferation.
How to Prepare Stock Solution?
|
Concentration
Volume
Mass
|
|---|
Solubility
Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
| Solvent | Solubility & Note |
|---|---|
| DMSO |
60 mg/mL
(198.41 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Ethanol | 1.5 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).
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Note: Technical data last updated: Sep 1, 2026.