333-31-3
Chemical Structure
Methacholine bromide
Synonym(s): Acetyl-β-methylcholine bromide
- CAS. Nr.: 333-31-3
- Formula:C8H18BrNO2
- Molecular Weight:240.14
IUPAC Name: 2-acetoxy-N,N,N-trimethylpropan-1-aminium bromide
InChIKey: MMVPLEUBMWUYIB-UHFFFAOYSA-M
SMILES: CC(OC(C)=O)C[N+](C)(C)C.[Br-]
Biological Activity: Methacholine (Acetyl-β-methylcholine) bromide is a potent muscarinic-3 (M3) agonist. Methacholine bromide acts directly on acetylcholine receptors on smooth muscle causing bronchoconstriction and airway narrowing. Methacholine bromide shows a high sensitivity to identify bronchial hyperresponsiveness (BHR). Methacholine bromide can be used to measure airway hyperresponsiveness (AHR) as a diagnostic aid in the assessment of individuals with asthma-like symptoms and normal resting expiratory flow rates[1][2][3][4].
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Methacholine bromide | Methacholine (Acetyl-β-methylcholine) bromide is a potent muscarinic-3 (M3) agonist. Methacholine bromide acts directly on acetylcholine receptors on smooth muscle causing bronchoconstriction and airway narrowing. Methacholine bromide shows a high sensitivity to identify bronchial hyperresponsiveness (BHR). Methacholine bromide can be used to measure airway hyperresponsiveness (AHR) as a diagnostic aid in the assessment of individuals with asthma-like symptoms and normal resting expiratory flow rates. | |||||||||||||||||||||
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References
- [1]. Cohen J, et al. Relationship between airway responsiveness to neurokinin A and methacholine in asthma. Pulm Pharmacol Ther. 2005;18(3):171-176. [Content Brief]
- [2]. Anderson SD, et al. Comparison of mannitol and methacholine to predict exercise-induced bronchoconstriction and a clinical diagnosis of asthma. Respir Res. 2009;10(1):4. Published 2009 Jan 23. [Content Brief]
- [3]. Cockcroft DW. Methacholine challenge methods. Chest. 2008;134(4):678-680. [Content Brief]
- [4]. Kabara S, et al. Differential effects of thiopental on methacholine- and serotonin-induced bronchoconstriction in dogs. Br J Anaesth. 2003 Sep;91(3):379-84. [Content Brief]
