1. Anti-infection
  2. Bacterial
  3. Polymyxin B Sulfate

Polymyxin B Sulfate 

Cat. No.: HY-A0248
Handling Instructions

Polymyxin B Sulfate is a cationic surfactant antibiotic agent.

For research use only. We do not sell to patients.

Polymyxin B Sulfate Chemical Structure

Polymyxin B Sulfate Chemical Structure

CAS No. : 1405-20-5

Size Price Stock Quantity
500 mg USD 60 In-stock
Estimated Time of Arrival: December 31
1 g USD 72 In-stock
Estimated Time of Arrival: December 31
5 g USD 180 In-stock
Estimated Time of Arrival: December 31
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50 g   Get quote  

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Customer Review

Based on 2 publication(s) in Google Scholar

Top Publications Citing Use of Products
  • Biological Activity

  • Purity & Documentation

  • References

  • Customer Review


Polymyxin B Sulfate is a cationic surfactant antibiotic agent. A mixture of polymyxins B1 and B2, increases the permeability of the cell membrane. In vitro: RB50 is resistant to killing by polymyxin B at concentrations up to 100 μg/ml.

Molecular Weight

1287.53 (PolymyxinB2Sulfate)


C₅₅H₉₆N₁₆O₁₃.H₂SO₄ (Polymyxin B₂ Sulfate)


O=S(O)(O)=O.O=C(N[[email protected]](C(N[[email protected]@](C(N[[email protected]](C(N[[email protected]@]1([H])[[email protected]](O)C)=O)CCN)=O)([H])CCN)=O)CC(C)C)[[email protected]](NC([[email protected]@H](NC([[email protected]@](CCNC1=O)([H])NC([[email protected]](CCN)NC([[email protected]]([[email protected]](O)C)NC([[email protected]](CCN)NC(CCCCC(C)C)=O)=O)=O)=O)=O)CCN)=O)CC2=CC=CC=C2.O=C(N[[email protected]](C(N[[email protected]@](C(N[[email protected]](C(N[[email protected]@]3([H])[[email protected]](O)C)=O)CCN)=O)([H])CCN)=O)CC(C)C)[[email protected]](NC([[email protected]@H](NC([[email protected]@](CCNC3=O)([H])NC([[email protected]](CCN)NC([[email protected]]([[email protected]](O)C)NC([[email protected]](CCN)NC(CCCC[[email protected]@H](C)CC)=O)=O)=O)=O)=O)CCN)=O)CC4=CC=CC=C4


Room temperature in continental US; may vary elsewhere.

Powder -20°C 3 years
4°C 2 years
In solvent -80°C 6 months
-20°C 1 month
Solvent & Solubility
In Vitro: 

H2O : ≥ 25 mg/mL

*"≥" means soluble, but saturation unknown.


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Polymyxin BBacterialAntibioticInhibitorinhibitorinhibit

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