SMILES:

CCN(CC)CCOC1CCC2(C3CCC4(C(C3CC=C2C1)CCC4=O)C)C.Cl
U-18666A Chemical Structure
Chemical Structure
Check the U-18666A product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name (3S,8R,9S,10R,13S,14S)-3-[2-(diethylamino)ethoxy]-10,13-dimethyl-1,2,3,4,7,8,9,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthren-17-one;hydrochloride
CAS Number 3039-71-2
Molecular Formula

C25H42ClNO2

Molecular Weight (MW) 424.06
SMILES CCN(CC)CCOC1CCC2(C3CCC4(C(C3CC=C2C1)CCC4=O)C)C.Cl
InChIKey GZFYZYBWLCYBMI-MYZJJQSMSA-N

How to Prepare Stock Solution?

Concentration Volume Mass
1 mg 5 mg 10 mg
🧮 Molarity Calculator

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 85 mg/mL (200.44 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol 85 mg/mL
Water 43 mg/mL
FAQ
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).

Aliquotting Service

Free Aliquotting Service

Pre-aliquoted for Longevity: Solid-state aliquots offer significantly longer shelf life compared to stock solutions, ensuring maximum stability for every use.

Looking for a specific aliquot size? Reach out to your local sales representative or contact us at orders@selleckchem.com.

Note: Technical data last updated: Sep 1, 2026.