CAS No. 26095-59-0

Batch: Purity:99.68
Otilonium Bromide Chemical Structure
Chemical Structure
Check the Otilonium Bromide product page for in-depth specifications, including solubility, stock solutions, MOA, and working concentrations.

Chemical Information

IUPAC Name diethyl-methyl-[2-[4-[(2-octoxybenzoyl)amino]benzoyl]oxyethyl]azanium bromide
CAS Number 26095-59-0
Molecular Formula

C29H43BrN2O4

Molecular Weight (MW) 563.57
SMILES CCCCCCCCOC1=CC=CC=C1C(=O)NC2=CC=C(C=C2)C(=O)OCC[N+](C)(CC)CC.[Br-]
InChIKey VWZPIJGXYWHBOW-UHFFFAOYSA-N

Ordering Information

Biological Activity

Otilonium bromide is a potent antimuscarinic agent and spasmolytic compound that targets muscarinic acetylcholine receptors and L-type calcium channels. By inhibiting muscarinic receptor activation and blocking L-type calcium influx in smooth muscle cells, it suppresses calcium-dependent contractile signaling pathways. This inhibition reduces intestinal smooth muscle hypermotility and spasm, leading to muscle relaxation and suppression of visceral hypersensitivity response pathways.

How to Prepare Stock Solution?

Concentration Volume Mass
🧮 Molarity Calculator

Solubility

Batch:
All in vitro solubility values are batch-tested experimental data (non-literature values).
Solvent Solubility & Note
DMSO 113 mg/mL (200.5 mM)
(Moisture-contaminated DMSO may reduce solubility. Use fresh, anhydrous DMSO. The recommended stock concentration is 10 mM in DMSO.)
Water 113 mg/mL
Ethanol 113 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.