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Methacholine Chloride (Acetyl-β-methylcholine chloride) is a quaternary ammonium parasympathomimetic agent with the muscarinic actions of ACETYLCHOLINE. It is hydrolyzed by ACETYLCHOLINESTERASE at a considerably slower rate than ACETYLCHOLINE and is more resistant to hydrolysis by nonspecific CHOLINESTERASES so that its actions are more prolonged. It is used as a parasympathomimetic bronchoconstrictor agent and as a diagnostic aid for bronchial asthma.

| Pack Size | Price | Availability | Quantity |
|---|---|---|---|
| 25 mg | $32 | In Stock | |
| 50 mg | $43 | In Stock | |
| 100 mg | $59 | In Stock | |
| 500 mg | $142 | In Stock | |
| 1 g | $198 | In Stock | |
| 1 mL x 10 mM (in DMSO) | $47 | In Stock |
| Description | Methacholine Chloride (Acetyl-β-methylcholine chloride) is a quaternary ammonium parasympathomimetic agent with the muscarinic actions of ACETYLCHOLINE. It is hydrolyzed by ACETYLCHOLINESTERASE at a considerably slower rate than ACETYLCHOLINE and is more resistant to hydrolysis by nonspecific CHOLINESTERASES so that its actions are more prolonged. It is used as a parasympathomimetic bronchoconstrictor agent and as a diagnostic aid for bronchial asthma. |
| Synonyms | Mecholyl chloride, Acetyl-β-methylcholine chloride |
| Molecular Weight | 195.69 |
| Formula | C8H18ClNO2 |
| Cas No. | 62-51-1 |
| Smiles | [Cl-].CC(C[N+](C)(C)C)OC(C)=O |
| Relative Density. | 1.1028 g/cm3 (Estimated) |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. | |||||||||||||||||||||||||||||||||||
| Solubility Information | DMSO: 50 mg/mL (255.51 mM), Sonication is recommended. H2O: 100 mg/mL (511.01 mM), Sonication is recommended. | |||||||||||||||||||||||||||||||||||
Solution Preparation Table | ||||||||||||||||||||||||||||||||||||
DMSO/H2O
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