CAS No. 91374-20-8

Batch: Purity:99.95
Ropinirole HCl Chemical Structure
Chemical Structure
Check the Ropinirole HCl product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name 4-[2-(dipropylamino)ethyl]-1,3-dihydroindol-2-one;hydrochloride
CAS Number 91374-20-8
Molecular Formula

C16H24N2O.HCl

Molecular Weight (MW) 296.84
SMILES CCCN(CCC)CCC1=C2CC(=O)NC2=CC=C1.Cl
InChIKey XDXHAEQXIBQUEZ-UHFFFAOYSA-N

Ordering Information

Biological Activity

Ropinirole HCl (SKF-101468A) is a selective dopamine D2 receptor agonist with a Ki of. By selectively stimulating dopamine D2 receptors, ropinirole mimics endogenous dopamine action and activates downstream signaling cascades, including inhibition of adenylyl cyclase activity. This receptor activation promotes signaling through dopamine-dependent pathways, suppressing elevated prolactin release and modulating motor function phenotypes in preclinical models. [1]

How to Prepare Stock Solution?

Concentration Volume Mass
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Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
Water 59 mg/mL
DMSO 30 mg/mL (101.06 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Ethanol Insoluble
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).

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