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Polymyxin E1, a peptide antibiotic and key component of the cationic lipopeptide antibiotic colistin, was initially extracted from B. polymyxa. It demonstrates effectiveness against P. aeruginosa and E. coli, with minimum inhibitory concentrations (MICs) of 2 µg/ml and 0.8 µg/ml, respectively.

| Pack Size | Price | USA Warehouse | Global Warehouse | Quantity |
|---|---|---|---|---|
| 500 μg | $577 | 35 days | 35 days | |
| 1 mg | $1,090 | 35 days | 35 days |
| Description | Polymyxin E1, a peptide antibiotic and key component of the cationic lipopeptide antibiotic colistin, was initially extracted from B. polymyxa. It demonstrates effectiveness against P. aeruginosa and E. coli, with minimum inhibitory concentrations (MICs) of 2 µg/ml and 0.8 µg/ml, respectively. |
| Synonyms | Colistin A sulfate |
| Molecular Weight | 1169.50 |
| Formula | C53H100N16O13.XH2SO4 |
| Cas No. | 207990-63-4 |
| Smiles | NCC[C@@H](C(N[C@H]1CCNC([C@@]([C@H](O)C)([H])NC([C@@H](NC([C@@H](NC([C@@H](NC([C@H](NC([C@@H](NC1=O)CCN)=O)CC(C)C)=O)CC(C)C)=O)CCN)=O)CCN)=O)=O)=O)NC([C@H]([C@H](O)C)NC([C@@H](NC(CCCC[C@@H](C)CC)=O)CCN)=O)=O.O=S(O)(O)=O |
| Storage | Powder: -20°C for 3 years | In solvent: -80°C for 1 year | Shipping with blue ice/Shipping at ambient temperature. | |||||||||||||||
| Solubility Information | PBS pH 7.2: 10 mg/mL (8.55 mM), Sonication is recommended. | |||||||||||||||
Solution Preparation Table | ||||||||||||||||
PBS pH 7.2
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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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