Oxitropium Bromide

Cat. No.: HY-U00105: FAQs
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Oxitropium bromide is an mAChR antagonist used as an anticholinergic bronchodilator agent for the treatment of asthma and chronic obstructive pulmonary disease.

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Oxitropium Bromide Chemical Structure

CAS No. : 30286-75-0

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Biological Activity
Protocol
Purity & Documentation
References
Customer Review

Description	Oxitropium bromide is an mAChR antagonist used as an anticholinergic bronchodilator agent for the treatment of asthma and chronic obstructive pulmonary disease.
IC₅₀ & Target	mAChR^[1]
In Vitro	Oxitropium bromide is a muscarinic antagonist which blocks musucarinic acetylcholine receptors (mAChR). Incubation with oxitropium bromide of untreated diaphragm muscle and diaphragm muscle injected with endotoxin does not increase the force-frequency curves dose-dependently in vitro; however, it causes both types of muscle to be fatigue resistant^[1]. MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only. Oxitropium Bromide Related Antibodies
In Vivo	Oxitropium bromide inhalation shifts force-frequency curves upward at 2 h after inhalation and inhibits the decrease of force-frequency curves due to endotoxin injection in vivo^[1]. Oxitropium bromide strongly and persistently inhibits the acetylcholine (ACh)-induced resistance. The increase in resistance induced by histamine, serotonin, leukotriene D4 or antigen is prevented by oxitropium bromide oxitropium bromide^[2]. Inhalation of the anticholinergic agent oxitropium bromide at doses of 1.5 μg and higher greatly attenuates the decrease in mucus score produced by intravenous histamine but not by inhaled histamine^[3]. MedChemExpress (MCE) has not independently confirmed the accuracy of these methods. They are for reference only.
Molecular Weight	412.32
Formula	C₁₉H₂₆BrNO₄
CAS No.	30286-75-0
SMILES	CC[N@@+]1([C@H]2[C@@H](O3)[C@@H]3[C@@H]1C[C@H](OC([C@@H](C4=CC=CC=C4)CO)=O)C2)C.[Br-]
Shipping	Room temperature in continental US; may vary elsewhere.
Storage	Please store the product under the recommended conditions in the Certificate of Analysis.
Purity & Documentation	Data Sheet (275 KB) Handling Instructions (2659 KB)
References	[1]. Shindoh C, et al. Effects of inhalation or incubation of oxitropium bromide on diaphragm muscle contractility in mice. Allergol Int. 2011 Sep;60(3):365-72. [Content Brief] [2]. Kohno SW, et al. Effect of oxitropium bromide (Ba253) on increased airway resistance induced by various agonists and antigen in the guinea pig. Jpn J Pharmacol. 1989 Aug;50(4):455-66. [Content Brief] [3]. Takeyama K, et al. Effect of oxitropium bromide on histamine-induced airway goblet cell secretion. Am J Respir Crit Care Med. 1996 Jul;154(1):231-6. [Content Brief]

Animal Administration
^[1]

Mice: In the oxitropium bromide inhalation group, animals are given 2 puffs of inhalation from a oxitropium bromide MDI (metered dose inhaler) via a 75-mL spacer, and then diaphragm muscles are dissected and measured as to contractility immediately, 1 hour, 2 hours and 4 hours later (n=5 animals each). An animal is placed in a centrifugal tube (inner diameter=30 mm) with a round hole (diameter=10 mm) in the bottom, its nose and mouth being exposed through the hole to breath. An oxitropium bromide MDI (metered dose inhaler) releases 2 puffs into a spacer attached to the tube. Aerosols of oxitropium bromide are inhaled for about 10 seconds, while the animal is breathing spontaneously through the hole of the tube^[1].

MCE has not independently confirmed the accuracy of these methods. They are for reference only.

References

[1]. Shindoh C, et al. Effects of inhalation or incubation of oxitropium bromide on diaphragm muscle contractility in mice. Allergol Int. 2011 Sep;60(3):365-72. [Content Brief]

[2]. Kohno SW, et al. Effect of oxitropium bromide (Ba253) on increased airway resistance induced by various agonists and antigen in the guinea pig. Jpn J Pharmacol. 1989 Aug;50(4):455-66. [Content Brief]

[3]. Takeyama K, et al. Effect of oxitropium bromide on histamine-induced airway goblet cell secretion. Am J Respir Crit Care Med. 1996 Jul;154(1):231-6. [Content Brief]