monensin A

CHEBI:27617 ·resolve ·ANTIFUNGAL ·EXACT SEEDED

A spiroketal, monensin A is the major component of monensin, a mixture of antibiotic substances produced by Streptomyces cinnamonensis. An antiprotozoal, it is used as the sodium salt as a feed additive for the prevention of coccidiosis in poultry and as a growth promoter in cattle. — 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

ionophore with antibiotic activityARO:3005163

Strictly broader compounds or drug classes this molecule belongs to.

CHEBI:25384 CHEBI:25384
CHEBI:26179 CHEBI:26179
CHEBI:59780 CHEBI:59780
CHEBI:72600 CHEBI:72600
ARO:3005163 ARO:3005163

Chemical structure

Computed structure properties
Molecular formula	C36H62O11
Charge	0
Average mass	670.881 Da
Monoisotopic mass	670.42921 Da
Source	ChEBI
InChIKey	GAOZTHIDHYLHMS-KEOBGNEYSA-N

SMILES

[H][C@]1([C@@H](C)[C@@H](OC)[C@H](C)C(=O)O)O[C@@]2(CC[C@@](C)([C@@]3([H])CC[C@@](CC)([C@]4([H])O[C@@]([H])([C@@]5([H])O[C@@](O)(CO)[C@H](C)C[C@@H]5C)C[C@@H]4C)O3)O2)C[C@H](O)[C@H]1C

InChI

InChI=1S/C36H62O11/c1-10-34(31-20(3)16-26(43-31)28-19(2)15-21(4)36(41,18-37)46-28)12-11-27(44-34)33(8)13-14-35(47-33)17-25(38)22(5)30(45-35)23(6)29(42-9)24(7)32(39)40/h19-31,37-38,41H,10-18H2,1-9H3,(H,39,40)/t19-,20-,21+,22+,23-,24-,25-,26+,27+,28-,29+,30-,31+,33-,34-,35+,36-/m0/s1

Also called

monensin (INN)— chebi
monensina (INN)— chebi
monensinum (INN)— chebi
(2S,3R,4S)-4-[(2S,5R,7S,8R,9S)-2-{(2S,2'R,3'S,5R,5'R)-2-ethyl-5'-[(2S,3S,5R,6R)-6-hydroxy-6-(hydroxymethyl)-3,5-dimethyltetrahydro-2H-pyran-2-yl]-3'-methyloctahydro-2,2'-bifuran-5-yl}-9-hydroxy-2,8-dimethyl-1,6-dioxaspiro[4.5]dec-7-yl]-3-methoxy-2-methylpentanoic acid (EXACT_SYNONYM)— chebi
Monensin (EXACT_SYNONYM)— chebi
Monensin A (EXACT_SYNONYM)— chebi
monensic acid (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

Activity roles

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

CHEBI:33281 CHEBI:33281
CHEBI:35718 CHEBI:35718
CHEBI:35818 CHEBI:35818

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
ARO	`ARO:3007484`	monensin	`antibioticmech:aro-63950f6285`	2026-08-30
CHEBI	`CHEBI:27617`	monensin A	`antibioticmech:chebi-dd38701fcb`	2026-08-30

Mechanism summary

Mode of action: MEMBRANE_DISRUPTION host shared target — Assigned from ChEBI role CHEBI:24869 (ionophore). ChEBI asserts the role on the compound. The target it names is one the host has too, so the mechanism is true but is not evidence of selectivity — see mode_of_action_target_scope. Not a curator's mechanistic review.

Curation history

SEEDED_FROM_SOURCES 2026-08-30 · seed_from_sources
Seeded from data/raw/ inventories (ARO, 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.