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C4461

Sigma-Aldrich

Colistin sulfate salt

≥19,000 IU/mg

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Synonym(s):
Polymyxin E
CAS Number:
EC Number:
MDL number:
eCl@ss:
34050906
NACRES:
NA.85

form

powder

Quality Level

specific activity

≥19,000 IU/mg

antibiotic activity spectrum

Gram-negative bacteria

mode of action

cell membrane | interferes

storage temp.

2-8°C

InChI

1S/C53H100N16O13.H2O4S/c1-9-30(6)12-10-11-13-41(72)60-33(14-20-54)48(77)69-43(32(8)71)53(82)65-36(17-23-57)45(74)64-38-19-25-59-52(81)42(31(7)70)68-49(78)37(18-24-58)62-44(73)34(15-21-55)63-50(79)39(26-28(2)3)67-51(80)40(27-29(4)5)66-46(75)35(16-22-56)61-47(38)76;1-5(2,3)4/h28-40,42-43,70-71H,9-27,54-58H2,1-8H3,(H,59,81)(H,60,72)(H,61,76)(H,62,73)(H,63,79)(H,64,74)(H,65,82)(H,66,75)(H,67,80)(H,68,78)(H,69,77);(H2,1,2,3,4)/t30?,31-,32-,33+,34+,35+,36+,37+,38+,39+,40-,42+,43+;/m1./s1

InChI key

ZJIWRHLZXQPFAD-LRYSGCCDSA-N

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1 of 4

This Item
C151127655P0972
Colistin sulfate salt ≥19,000 IU/mg

C4461

Colistin sulfate salt

Colistin sodium methanesulfonate ~11,500 U/mg

C1511

Colistin sodium methanesulfonate

Colistin sodium methanesulfonate from Bacillus colistinus

27655

Colistin sodium methanesulfonate

Polymyxin B sulfate meets USP testing specifications

P0972

Polymyxin B sulfate

mode of action

cell membrane | interferes

mode of action

cell membrane | interferes

mode of action

cell membrane | interferes

mode of action

cell membrane | interferes

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

form

powder

form

powder

form

powder or crystals

form

powder

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

storage temp.

2-8°C

specific activity

≥19,000 IU/mg

specific activity

~11,500 U/mg

specific activity

-

specific activity

-

General description

Chemical structure: peptide

Application

Colistin sulfate is used to permeabilize bacterial cell membranes and to study mannose-resistant haemagglutination and antibiotic resistance in certain organisms such as A. baumannii . It has been used to study hephrotoxicity in the rat kidney , and MICs, time-kill kinetics, and postantibiotic effect (PAE) against Pseudomonas aeruginosa .

Biochem/physiol Actions

Mode of Action: Binds to lipids on the cell cytoplasmic membrane of Gram-negative bacteria and disrupts the cell wall integrity.
Antimicrobial spectrum: Gram-negative bacteria.
Mode of Action: Binds to lipids on the cell cytoplasmic membrane of Gram-negative bacteria and disrupts the cell wall integrity.
Antimicrobial spectrum: Gram-negative bacteria. It is proposed that renal reabsorption of colistin may involve organic cation transporters and peptide transporters and that the process is sensitive to pH .

Analysis Note

Freely soluble in water, practically insoluble in acetone and in ethanol (96%)

Other Notes

Keep container tightly closed in a dry and well-ventilated place.

related product

Product No.
Description
Pricing

pictograms

Skull and crossbones

signalword

Danger

hcodes

Hazard Classifications

Acute Tox. 3 Oral

Storage Class

6.1C - Combustible, acute toxic Cat.3 / toxic compounds or compounds which causing chronic effects

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges


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Peng Cui et al.
Antimicrobial agents and chemotherapy, 60(11), 6867-6871 (2016-09-08)
Persisters are small populations of quiescent bacterial cells that survive exposure to bactericidal antibiotics and are responsible for many persistent infections and posttreatment relapses. However, little is known about how to effectively kill persister bacteria. In the work presented here
Mehri Haeili et al.
Microbial drug resistance (Larchmont, N.Y.), 24(9), 1271-1276 (2018-03-29)
Colistin is considered a last-hope antibiotic against extensively drug-resistant isolates of Acinetobacter baumannii. Resistance to colistin has been rarely reported for A. baumannii. Genetic alterations in the PmrA-PmrB two-component system and lipid A biosynthesis genes may be associated with colistin
Anna Ebbensgaard et al.
Frontiers in microbiology, 9, 2153-2153 (2018-09-25)
Bacterial resistance to classical antibiotics is emerging worldwide. The number of infections caused by multidrug resistant bacteria is increasing and becoming a serious threat for human health globally. In particular, Gram-negative pathogens including multidrug resistant Escherichia coli are of serious
Candace M Marr et al.
Frontiers in microbiology, 11, 595798-595798 (2020-11-17)
Acinetobacter baumannii is a problematic pathogen due to its common expression of extensive drug resistance (XDR) and ability to survive in the healthcare environment. These characteristics are mediated, in part, by the signal transduction system BfmR/BfmS. We previously demonstrated, in
José María Saugar et al.
Antimicrobial agents and chemotherapy, 50(4), 1251-1256 (2006-03-30)
Acinetobacter baumannii has successfully developed resistance against all common antibiotics, including colistin (polymyxin E), the last universally active drug against this pathogen. The possible widespread distribution of colistin-resistant A. baumannii strains may create an alarming clinical situation. In a previous

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