| Size | Price | Stock | Qty |
|---|---|---|---|
| 100mg |
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| 250mg |
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| 500mg |
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| Other Sizes |
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| ln Vivo |
Dog bronchoconstriction is brought on by methacholine (0.5 µg/kg plus 5 µg/kg/min for 30 minutes) [4]. Bradykinin (4–40 µg/kg; i.v.) inhibits methacholine (0.5 mg/kg; i.v.)-induced bronchoconstriction in mice in a dose-dependent way [5].
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| Animal Protocol |
Animal/Disease Models: 9weeks old female balb/c (Bagg ALBino) mouse [6]
Doses: 0.03, 0.1, 0.3, 1 mg/kg Route of Administration: intravenous (iv) (iv)injection Experimental Results:Induced severe bronchoconstriction. |
| References | |
| Additional Infomation |
Methacholine chloride is a quaternary ammonium salt. It contains a methacholine.
Methacholine Chloride is the chloride salt form of methacholine, a direct-acting cholinergic muscarinic agonist with bronchoconstrictive, miotic, vasodilator, and cardiac vagomimetic activity. Methacholine chloride acts directly on the muscarinic receptors in the heart, eye, and lung, thereby producing parasympathomimetic effects. 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. (From Martindale, The Extra Pharmacopoeia, 30th ed, p1116) See also: Methacholine (has active moiety). Drug Indication Diagnosis of asthma |
| Molecular Formula |
C8H18CLNO2
|
|---|---|
| Molecular Weight |
195.6870
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| Exact Mass |
195.102
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| CAS # |
62-51-1
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| Related CAS # |
Methacholine bromide;333-31-3
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| PubChem CID |
6114
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| Appearance |
White to off-white solid powder
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| Density |
1.1028 (rough estimate)
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| Melting Point |
171-173ºC(lit.)
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| Index of Refraction |
1.5790 (estimate)
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| Hydrogen Bond Donor Count |
0
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| Hydrogen Bond Acceptor Count |
3
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| Rotatable Bond Count |
4
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| Heavy Atom Count |
12
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| Complexity |
138
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| Defined Atom Stereocenter Count |
0
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| InChi Key |
JHPHVAVFUYTVCL-UHFFFAOYSA-M
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| InChi Code |
InChI=1S/C8H18NO2.ClH/c1-7(11-8(2)10)6-9(3,4)5;/h7H,6H2,1-5H3;1H/q+1;/p-1
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| Chemical Name |
2-acetyloxypropyl(trimethyl)azanium;chloride
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| HS Tariff Code |
2934.99.9001
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| Storage |
Powder -20°C 3 years 4°C 2 years In solvent -80°C 6 months -20°C 1 month Note: Please store this product in a sealed and protected environment (e.g. under nitrogen), avoid exposure to moisture. |
| Shipping Condition |
Room temperature (This product is stable at ambient temperature for a few days during ordinary shipping and time spent in Customs)
|
| Solubility (In Vitro) |
DMSO : ~100 mg/mL (~511.01 mM)
H2O : ~100 mg/mL (~511.01 mM) |
|---|---|
| Solubility (In Vivo) |
Solubility in Formulation 1: ≥ 2.5 mg/mL (12.78 mM) (saturation unknown) in 10% DMSO + 40% PEG300 + 5% Tween80 + 45% Saline (add these co-solvents sequentially from left to right, and one by one), clear solution.
For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 400 μL PEG300 and mix evenly; then add 50 μL Tween-80 to the above solution and mix evenly; then add 450 μL normal saline to adjust the volume to 1 mL. Preparation of saline: Dissolve 0.9 g of sodium chloride in 100 mL ddH₂ O to obtain a clear solution. Solubility in Formulation 2: ≥ 2.5 mg/mL (12.78 mM) (saturation unknown) in 10% DMSO + 90% (20% SBE-β-CD in Saline) (add these co-solvents sequentially from left to right, and one by one), clear solution. For example, if 1 mL of working solution is to be prepared, you can add 100 μL of 25.0 mg/mL clear DMSO stock solution to 900 μL of 20% SBE-β-CD physiological saline solution and mix evenly. Preparation of 20% SBE-β-CD in Saline (4°C，1 week): Dissolve 2 g SBE-β-CD in 10 mL saline to obtain a clear solution. View More
Solubility in Formulation 3: ≥ 2.5 mg/mL (12.78 mM) (saturation unknown) in 10% DMSO + 90% Corn Oil (add these co-solvents sequentially from left to right, and one by one), clear solution. Solubility in Formulation 4: 130 mg/mL (664.32 mM) in PBS (add these co-solvents sequentially from left to right, and one by one), clear solution; with ultrasonication. |
| Preparing Stock Solutions | 1 mg | 5 mg | 10 mg | |
| 1 mM | 5.1101 mL | 25.5506 mL | 51.1012 mL | |
| 5 mM | 1.0220 mL | 5.1101 mL | 10.2202 mL | |
| 10 mM | 0.5110 mL | 2.5551 mL | 5.1101 mL |
*Note: Please select an appropriate solvent for the preparation of stock solution based on your experiment needs. For most products, DMSO can be used for preparing stock solutions (e.g. 5 mM, 10 mM, or 20 mM concentration); some products with high aqueous solubility may be dissolved in water directly. Solubility information is available at the above Solubility Data section. Once the stock solution is prepared, aliquot it to routine usage volumes and store at -20°C or -80°C. Avoid repeated freeze and thaw cycles.
Calculation results
Working concentration： mg/mL；
Method for preparing DMSO stock solution： mg drug pre-dissolved in μL DMSO (stock solution concentration mg/mL). Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug.
Method for preparing in vivo formulation:：Take μL DMSO stock solution, next add μL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O，mix and clarify.
(1) Please be sure that the solution is clear before the addition of next solvent. Dissolution methods like vortex, ultrasound or warming and heat may be used to aid dissolving.
(2) Be sure to add the solvent(s) in order.
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