C1511

Colistin sodium methanesulfonate

~11,500 U/mg

• Synonym(s): Colimycin sodium methanesulfonate, Methanesulfonic acid derivative of Polymyxin E, Polymyxin E sodium methanesulfonate
• Empirical Formula (Hill Notation): C₅₈H₁₁₅N₁₆Na₅O₂₈S₅
• CAS Number: 8068-28-8
• Molecular Weight: 1759.90
• EC Number: 232-516-9
• MDL number: MFCD00130824
• UNSPSC Code: 51102829
• PubChem Substance ID: 24892418
• NACRES: NA.85

Properties

• form: powder
• specific activity: ~11,500 U/mg
• solubility: H₂O: 50 mg/mL
• antibiotic activity spectrum: Gram-negative bacteria
• mode of action: cell membrane | interferes
• storage temp.: 2-8°C
• SMILES string: [Na+].[Na+].[Na+].[Na+].[Na+].CS([O-])(=O)=O.CS([O-])(=O)=O.CS([O-])(=O)=O.CS([O-])(=O)=O.CS([O-])(=O)=O.CCC(C)CCCCC(=O)N[C@@H](CCN)C(=O)N[C@@H](C(C)O)C(=O)N[C@@H](CCN)C(=O)N[C@H]1CCNC(=O)[C@@H](NC(=O)[C@H](CCN)NC(=O)[C@@H](CCN)NC(=O)[C@H](CC(C)C)NC(=O)[C@@H](CC(C)C)NC(=O)[C@H](CCN)NC1=O)C(C)O
• InChI: 1S/C53H100N16O13.5CH4O3S.5Na/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;5*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);5*1H3,(H,2,3,4);;;;;/q;;;;;;5*+1/p-5/t30?,31-,32-,33+,34-,35+,36+,37+,38+,39+,40-,42+,43+;;;;;;;;;;/m1........../s1
• InChI key: WSDSONZFNWDYGZ-BKFDUBCBSA-I

Description

General description

Chemical structure: peptide

Application

Colistin sodium methanesulfate is used to permeabilize bacterial cell membranes and to study mannose-resistant haemagglutination.

Biochem/physiol Actions

Colistin is a cationic, multicomponent lipopeptide antibiotic. It consists of a cyclic heptapeptide with tripeptide side chain, acylated at the N terminus by a fatty acid. It exhibits a potent anti-endotoxin. Colistin interacts with the anionic LPS molecules and displaces calcium and magnesium ions. It solubilzes the cytoplasmic membrane resulting in leakage of cytosol which contributes to the bactericidal effect.

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.

Other Notes

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

Safety Information

• Storage Class: 11 - Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Eyeshields, Gloves, type N95 (US)