CAS No. 159811-51-5
Batch:
Purity:99.73
Chemical Structure
Check the
Ulipristal
product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.
| CAS Number | 159811-51-5 | |
|---|---|---|
| Molecular Formula |
C28H35NO3 |
|
| Molecular Weight (MW) | 433.58 |
Ulipristal (Deacetyl CDB-2914) is a synthetic selective progesterone receptor modulator (SPRM) that directly targets progesterone receptors. By selectively binding to nuclear progesterone receptors, it modulates progesterone receptor-mediated signaling pathways and downstream transcriptional gene expression. This inhibition of progesterone receptor activation disrupts key reproductive pathways, leading to delayed or inhibited follicular rupture and altered endometrial maturation. [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 |
87 mg/mL
(200.65 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.) |
| Ethanol | 21 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.