CAS No. 23239-51-2

Batch: Purity:99.97
Ritodrine HCl  Chemical Structure
Chemical Structure
Check the Ritodrine HCl product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

CAS Number 23239-51-2
Molecular Formula

C17H21NO3.HCl

Molecular Weight (MW) 323.81
SMILES CC(C(C1=CC=C(C=C1)O)O)NCCC2=CC=C(C=C2)O.Cl

Ordering Information

Biological Activity

Ritodrine HCl is a selective β2-adrenergic receptor agonist. Activation of the β2-adrenergic receptor stimulates membrane-bound adenylate cyclase, resulting in the conversion of ATP to cyclic AMP (cAMP). Increased intracellular cAMP levels lead to reduced myosin light chain kinase activity and decreased intracellular calcium concentration, ultimately promoting uterine smooth muscle relaxation and inhibiting contractions.

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
DMSO 64 mg/mL (197.64 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 64 mg/mL
Ethanol 64 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).

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