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Potassium ionophore III (BME-44) is a highly specific potassium ion carrier based on a bis-crown ether structure. Featuring high lipophilicity, it effectively facilitates potassium transport across lipid bilayers and exhibits excellent selectivity over sodium (Na+) and ammonium (NH4+) ions. BME-44 is commonly utilized in the development of ion-selective electrodes (ISEs) and chemical sensors, where it is covalently immobilized or incorporated into polymer membranes for precise monitoring of potassium ions in environmental or biological samples.


| Pack Size | Price | USA Stock | Global Stock | Quantity |
|---|---|---|---|---|
| 1 mg | $115 | - | In Stock | |
| 5 mg | $279 | - | In Stock | |
| 10 mg | $413 | - | In Stock | |
| 25 mg | $689 | - | In Stock | |
| 50 mg | $979 | - | In Stock |
| Description | Potassium ionophore III (BME-44) is a highly specific potassium ion carrier based on a bis-crown ether structure. Featuring high lipophilicity, it effectively facilitates potassium transport across lipid bilayers and exhibits excellent selectivity over sodium (Na+) and ammonium (NH4+) ions. BME-44 is commonly utilized in the development of ion-selective electrodes (ISEs) and chemical sensors, where it is covalently immobilized or incorporated into polymer membranes for precise monitoring of potassium ions in environmental or biological samples. |
| In vitro | Potassium ionophore III exhibits near-Nernstian K+ sensitivity and stable responses across a wide pH range in membrane electrodes [1]. |
| Molecular Weight | 967.06 |
| Formula | C46H70N4O18 |
| Cas No. | 99348-39-7 |
| Smiles | O=C(OCC(C)(COC(=O)NC1=CC=2OCCOCCOCCOCCOC2C=C1N(=O)=O)CCCCCCCCCCCC)NC3=CC=4OCCOCCOCCOCCOC4C=C3N(=O)=O |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. |
Dissolve 2 mg of the compound in 100 μL DMSO
to obtain a stock solution at a concentration of 20 mg/mL . If the required concentration exceeds the compound's known solubility, please contact us for technical support before proceeding.
1) Add 100 μL of the DMSO
stock solution to 400 μL PEG300
and mix thoroughly until the solution becomes clear.
2) Add 50 μL Tween 80 and mix well until fully clarified.
3) Add 450 μL Saline,PBS or ddH2O
and mix thoroughly until a homogeneous solution is obtained.
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