Molekula
Polymyxin B sulfate
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Polymyxin B sulfate is a polycationic antimicrobial peptide used primarily as an antibiotic to treat severe Gram-negative bacterial infections, including those resistant to other drugs. It binds to bacterial cell membranes, disrupting their integrity. This chemical has a CAS number of 1405-20-5, with the molecular formula C55H96N16O13 · 2H2SO4 and a molecular weight of 1385.61. It must be stored between 2 to 8°C and carries a signal word of *Warning* due to its potential toxicity. Molekula supplies Polymyxin B sulfate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Often bought together
Pricing & pack sizes
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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1 g — £44.80 per pack ex VAT · £53.76 inc. VAT
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5 g — £147.20 per pack ex VAT · £176.64 inc. VAT
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White to off-white powder |
| Heavy metals | ≤20ppm |
| Identification | Liquid chromatography: conforms |
| pH | 5 - 7 |
| Loss on Drying | ≤6% |
| Solubility | Freely soluble in water, slightly soluble in Ethanol |
| Sulphated Ash | ≤0.75% |
| Particle Size | ≤30µm |
| Specific optical rotation | -78° - -90° |
| Phenylalanine | 9.0%-12.0% |
| Pyrogens | Meets the requirements |
| Total viable aerobic count | ≤100cfu/g |
| Potency (Dry Basis) | ≥ 6500 IU/mg |
| Sulphates (SO4)(2-) | 15.5% - 17.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | 2 to 8 °C |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| SKU | 59662126 |
| CAS Number | 1405-20-5 |
| Molecular Formula | C55H96N16O13 · 2H2SO4 |
| Molecular Weight | 1385.61 |
| SMILES | CCC(C)CCCCC(=O)NC(CCN)C(=O)NC(C(C)O)C(=O)NC(CCN)C(=O)NC1CCNC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC(=O)C(NC1=O)CCN)CC2=CC=CC=C2)CC(C)C)CCN)CCN)C(C)O.OS(=O)(=O)O |
| REACH Code | Y113 |
| Tariff Code | 29419000 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H302 Harmful if swallowed
- H317 May cause an allergic skin reaction
- H319 Causes serious eye irritation
- H332 Harmful if inhaled
- H336 May cause drowsiness or dizziness
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+312 IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell
- P302+352 IF ON SKIN: Wash with soap and water
- P304+341 IF INHALED: If breathing is difficult, remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is Polymyxin B sulfate commonly used for?
Polymyxin B sulfate is primarily used as an antibiotic to treat Gram-negative bacterial infections, including those caused by *Pseudomonas aeruginosa* and *Escherichia coli*.
What is the chemical formula and molecular weight of Polymyxin B sulfate?
The chemical formula is **C55H96N16O13 · 2H2SO4**, and the molecular weight is **1385.61 g/mol**.
How should Polymyxin B sulfate be stored?
Store at **2 to 8°C** to maintain stability and potency.
What grades or purities of Polymyxin B sulfate does Molekula supply?
Molekula supplies **pharmaceutical-grade Polymyxin B sulfate** suitable for research and clinical applications.
Can Molekula supply Polymyxin B sulfate in bulk quantities?
Yes, Molekula can provide Polymyxin B sulfate in bulk, with quantities tailored to your requirements.
What documentation comes with an order of Polymyxin B sulfate?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.