Methacholine (chloride)


CAS No. : 62-51-1

(Synonyms: Acetyl-β-methylcholine chloride)

62-51-1
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Cat. No. : HY-A0083
M.Wt: 195.69
Formula: C8H18ClNO2
Purity: >98 %
Solubility: DMSO : 100 mg/mL (ultrasonic);H2O : 100 mg/mL (ultrasonic)
Introduction of 62-51-1 :

Methacholine (Acetyl-β-methylcholine) choride is a potent muscarinic-3 (M3) agonist. Methacholine choride acts directly on acetylcholine receptors on smooth muscle causing bronchoconstriction and airway narrowing. Methacholine choride shows a high sensitivity to identify bronchial hyperresponsiveness (BHR). Methacholine choride 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]. In Vivo: Methacholine choride (0.5 µg/kg plus 5 µg/kg/min for 30 min) induces bronchoconstriction in dogs[4].
Methacholine choride (0.5 mg/kg; i.v.) induces bronchoconstriction was inhibited by bradykinin (4-40 µg/kg; i.v.) in a a dose-dependent manner in mouse[5].

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