Otilonium bromide

奥替溴铵

Also known as: Octylonium Bromide, N,N-Diethyl-N-methyl-2-[[4-[[2-(octyloxy)benzoyl]amino]benzoyl]oxy]ethanaminium bromide, SP-63, Spasmomen, Doralin, Menoctyl, Pasminox, Spasen, Spasmoctyl

Otilonium bromide (CAS 26095-59-0) is a compound in the Organohalogen Compounds category listed in the Jingsj chemical database. It has the molecular formula C29H43BrN2O4 and a molecular weight of 563.567 g/mol. It is also known as Octylonium Bromide, N,N-Diethyl-N-methyl-2-[[4-[[2-(octyloxy)benzoyl]amino]benzoyl]oxy]ethanaminium bromide and SP-63. Key property: a melting point of 130-133ºC. It is classified under GHS with signal word Warning and hazard statements H315 — Causes skin irritation, H319 — Causes serious eye irritation and H335 — May cause respiratory irritation. No supplier offers are currently listed; request a quote. Record last updated Aug 21, 2026.

CAS No.: 26095-59-0
Jingsj CID: J-1301-5
Molecular Formula: C₂₉H₄₃BrN₂O₄
Chinese Name: 奥替溴铵
Molecular Weight: 563.567 g/mol
Category: Organohalogen Compounds
Last updated: 8/21/2026

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Physicochemical Properties

Melting Point	130-133ºC
Exact Mass	562.240601
PSA	64.63000
LogP	3.39840
Storage Conditions	-20?C Freezer

GHS Safety & Compliance

IrritantSignal word: Warning

H315 — Causes skin irritation
H319 — Causes serious eye irritation
H335 — May cause respiratory irritation

Activity & Biological Data

Additional Information	[1]. Battaglia, G., et al., Otilonium bromide in irritable bowel syndrome: a double-blind, placebo-controlled, 15-week study. Aliment Pharmacol Ther, 1998. 12(10): p. 1003-10. [2]. Clave, P., et al., Randomised clinical trial: otilonium bromide improves frequency of abdominal pain, severity of distention and time to relapse in patients with irritable bowel syndrome. Aliment Pharmacol Ther, 2011. 34(4): p. 432-42. [3]. Lindqvist, S., et al., The colon-selective spasmolytic otilonium bromide inhibits muscarinic M(3) receptor-coupled calcium signals in isolated human colonic crypts. Br J Pharmacol, 2002. 137(7): p. 1134-42. [4]. Gandia, L., et al., Otilonium: a potent blocker of neuronal nicotinic ACh receptors in bovine chromaffin cells. Br J Pharmacol, 1996. 117(3): p. 463-470.

Additional Information

[1]. Battaglia, G., et al., Otilonium bromide in irritable bowel syndrome: a double-blind, placebo-controlled, 15-week study. Aliment Pharmacol Ther, 1998. 12(10): p. 1003-10. [2]. Clave, P., et al., Randomised clinical trial: otilonium bromide improves frequency of abdominal pain, severity of distention and time to relapse in patients with irritable bowel syndrome. Aliment Pharmacol Ther, 2011. 34(4): p. 432-42. [3]. Lindqvist, S., et al., The colon-selective spasmolytic otilonium bromide inhibits muscarinic M(3) receptor-coupled calcium signals in isolated human colonic crypts. Br J Pharmacol, 2002. 137(7): p. 1134-42. [4]. Gandia, L., et al., Otilonium: a potent blocker of neuronal nicotinic ACh receptors in bovine chromaffin cells. Br J Pharmacol, 1996. 117(3): p. 463-470.

Customs & Trade Information

HS Code	2923900090
Summary	2923900090 other quaternary ammonium salts and hydroxides。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

Frequently Asked Questions

What is the CAS number of Otilonium bromide?

The CAS number of Otilonium bromide is 26095-59-0.

What are the molecular formula and molecular weight of Otilonium bromide?

Otilonium bromide has molecular formula C29H43BrN2O4 and molecular weight 563.567 g/mol.

Is Otilonium bromide hazardous?

Otilonium bromide has GHS signal word Warning and hazard statements H315 — Causes skin irritation; H319 — Causes serious eye irritation; H335 — May cause respiratory irritation.

Data compiled from public chemical databases and supplier catalogs; supplier offers are provided by suppliers.

Last updated: 8/21/2026

How to cite: Jingsj. "Otilonium bromide (CAS 26095-59-0)". Jingsj Chemical Database. https://www.jingsj.com/compound/J-1301-5 (accessed 2026-10-28).

Data for reference only; verify specifications, grades and regulatory status with suppliers before purchase.