usnic acid

CHEBI:38319 ·resolve ·ANTIFUNGAL ·EXACT SEEDED

A member of the class of dibenzofurans that is dibenzo[b,d]furan-1(9bH)-one substituted by acetyl groups at positions 2 and 6, hydroxy groups at positions 3 and 7 and methyl groups at positions 8 and 9b. — 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:26195 CHEBI:26195
CHEBI:38922 CHEBI:38922
CHEBI:51867 CHEBI:51867

Chemical structure

Computed structure properties
Molecular formula	C18H16O7
Charge	0
Average mass	344.319 Da
Monoisotopic mass	344.0896 Da
Source	ChEBI
InChIKey	WEYVVCKOOFYHRW-UHFFFAOYSA-N

SMILES

CC(=O)C1=C(O)C=C2Oc3c(C(C)=O)c(O)c(C)c(O)c3C2(C)C1=O

InChI

InChI=1S/C18H16O7/c1-6-14(22)12(8(3)20)16-13(15(6)23)18(4)10(25-16)5-9(21)11(7(2)19)17(18)24/h5,21-23H,1-4H3

Also called

2,6-diacetyl-3,7,9-trihydroxy-8,9b-dimethyldibenzo[b,d]furan-1(9bH)-one (EXACT_SYNONYM)— chebi
Usninsäure (EXACT_SYNONYM)— chebi
usnein (EXACT_SYNONYM)— chebi
usniacin (EXACT_SYNONYM)— chebi
usninic acid (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

beilstein:346490
cas:125-46-2
reaxys:96699
wikipedia.en:Usnic_acid

Activity roles

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

CHEBI:35718 CHEBI:35718

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:38319`	usnic acid	`antibioticmech:chebi-449feb81f3`	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.