ethidium bromide

CHEBI:4883 ·resolve ·ANTIPROTOZOAL ·EXACT SEEDED

The organic bromide salt of ethidium. — 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:48369 CHEBI:48369

Chemical structure

Computed structure properties
Molecular formula	Br.C21H20N3
Charge	0
Average mass	394.316 Da
Monoisotopic mass	393.08406 Da
Source	ChEBI
InChIKey	ZMMJGEGLRURXTF-UHFFFAOYSA-N

SMILES

CC[n+]1c(-c2ccccc2)c2cc(N)ccc2c2ccc(N)cc21.[Br-]

InChI

InChI=1S/C21H19N3.BrH/c1-2-24-20-13-16(23)9-11-18(20)17-10-8-15(22)12-19(17)21(24)14-6-4-3-5-7-14;/h3-13,23H,2,22H2,1H3;1H

Also called

3,8-diamino-5-ethyl-6-phenylphenanthridinium bromide (EXACT_SYNONYM)— chebi
2,7-diamino-10-ethyl-9-phenylphenanthridinium bromide (EXACT_SYNONYM)— chebi
2,7-diamino-9-phenyl-10-ethylphenanthridinium bromide (EXACT_SYNONYM)— chebi
Dromilac (EXACT_SYNONYM)— chebi
EtBr (EXACT_SYNONYM)— chebi
Ethidium bromide (EXACT_SYNONYM)— chebi
Homidium bromide (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

beilstein:3642536
cas:1239-45-8
chemspider:14034
kegg.compound:C11161
metacyc.compound:CPD-22916
wikipedia.en:Ethidium_bromide

Activity roles

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

CHEBI:36335 CHEBI:36335

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:4883`	ethidium bromide	`antibioticmech:chebi-5c27639e3a`	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.