colistin B sodium methanesulfonate

CHEBI:59664 ·resolve ·ANTIBACTERIAL ·EXACT SEEDED

Colistin B in which each of the primary amino groups is converted into the corresponding aminomethanesulfonic acid sodium salt, commonly by treatment with formaldehyde followed by sodium bisulfite. — ChEBI

Machine-generated and unreviewed. Identity, structure and cross-references come straight from ChEBI's and CARD's own data; no curator has signed off on this record yet.

Classification

Strictly broader compounds or drug classes this molecule belongs to.

CHEBI:25903 CHEBI:25903
CHEBI:38700 CHEBI:38700
CHEBI:59062 CHEBI:59062

Chemical structure

Computed structure properties
Molecular formula	C57H103N16O28S5.5Na
Charge	0
Average mass	1735.82 Da
Monoisotopic mass	1734.52197 Da
Source	ChEBI
InChIKey	WZLRYLCDDODFHL-WSNMVEPOSA-I

SMILES

CC(C)CCCCC(=O)N[C@@H](CCNCS(=O)(=O)[O-])C(=O)N[C@H](C(=O)N[C@@H](CCNCS(=O)(=O)[O-])C(=O)N[C@H]1CCNC(=O)[C@H]([C@@H](C)O)NC(=O)[C@H](CCNCS(=O)(=O)[O-])NC(=O)[C@H](CCNCS(=O)(=O)[O-])NC(=O)[C@H](CC(C)C)NC(=O)[C@@H](CC(C)C)NC(=O)[C@H](CCNCS(=O)(=O)[O-])NC1=O)[C@@H](C)O.[Na+].[Na+].[Na+].[Na+].[Na+]

InChI

InChI=1S/C57H108N16O28S5.5Na/c1-32(2)11-9-10-12-45(76)64-37(13-19-58-27-102(87,88)89)52(81)73-47(36(8)75)57(86)69-40(16-22-61-30-105(96,97)98)49(78)67-42-18-24-63-56(85)46(35(7)74)72-53(82)41(17-23-62-31-106(99,100)101)66-48(77)38(14-20-59-28-103(90,91)92)68-54(83)43(25-33(3)4)71-55(84)44(26-34(5)6)70-51(80)39(65-50(42)79)15-21-60-29-104(93,94)95;;;;;/h32-44,46-47,58-62,74-75H,9-31H2,1-8H3,(H,63,85)(H,64,76)(H,65,79)(H,66,77)(H,67,78)(H,68,83)(H,69,86)(H,70,80)(H,71,84)(H,72,82)(H,73,81)(H,87,88,89)(H,90,91,92)(H,93,94,95)(H,96,97,98)(H,99,100,101);;;;;/q;5*+1/p-5/t35-,36-,37+,38+,39+,40+,41+,42+,43+,44-,46+,47+;;;;;/m1...../s1

Also called

pentasodium {[(3S)-4-{[(3S,6S,9S,12S,15R,18S,21S)-3-[(1R)-1-hydroxyethyl]-12,15-bis(2-methylpropyl)-2,5,8,11,14,17,20-heptaoxo-6,9,18-tris{2-[(sulfonatomethyl)amino]ethyl}-1,4,7,10,13,16,19-heptaazacyclotricosan-21-yl]amino}-3-{[(2S,3R)-3-hydroxy-2-({(2S)-2-[(6-methylheptanoyl)amino]-4-[(sulfonatomethyl)amino]butanoyl}amino)butanoyl]amino}-4-oxobutyl]amino}methanesulfonate (EXACT_SYNONYM)— chebi
colistin B sulfomethate sodium (EXACT_SYNONYM)— chebi
polymyxin E2 sodium methanesulfonate (EXACT_SYNONYM)— chebi
polymyxin E2 sulfomethate sodium (EXACT_SYNONYM)— chebi

Activity roles

Every antimicrobial role a source asserts for this compound — the unreduced evidence behind its antimicrobial_class.

CHEBI:33281 CHEBI:33281
CHEBI:33282 CHEBI:33282

Source concepts

Every upstream concept that resolved to this record. The merge is the product: this is what shows ChEBI and CARD are describing the same structure.

Upstream concepts merged into this record
Source	Native ID	Label	Minted CURIE	Version
CHEBI	`CHEBI:59664`	colistin B sodium methanesulfonate	`antibioticmech:chebi-b1371c9688`	2026-08-30

Curation history

SEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Seeded from data/raw/ inventories (CHEBI)
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories
RESEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Re-seeded from updated data/raw/ inventories

Provenance

Seeded by scripts/seed_from_sources.py from the committed inventories in data/raw/. View the record.