citric acid

CHEBI:30769 ·resolve ·ANTIMICROBIAL_UNSPECIFIED ·EXACT SEEDED

A tricarboxylic acid that is propane-1,2,3-tricarboxylic acid bearing a hydroxy substituent at position 2. It is an important metabolite in the pathway of all aerobic organisms. — 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:27093 CHEBI:27093

Chemical structure

Computed structure properties
Molecular formula	C6H8O7
Charge	0
Average mass	192.123 Da
Monoisotopic mass	192.027 Da
Source	ChEBI
InChIKey	KRKNYBCHXYNGOX-UHFFFAOYSA-N

SMILES

O=C(O)CC(O)(CC(=O)O)C(=O)O

InChI

InChI=1S/C6H8O7/c7-3(8)1-6(13,5(11)12)2-4(9)10/h13H,1-2H2,(H,7,8)(H,9,10)(H,11,12)

Also called

2-hydroxypropane-1,2,3-tricarboxylic acid (EXACT_SYNONYM)— chebi
2-Hydroxy-1,2,3-propanetricarboxylic acid (EXACT_SYNONYM)— chebi
2-Hydroxytricarballylic acid (EXACT_SYNONYM)— chebi
3-Carboxy-3-hydroxypentane-1,5-dioic acid (EXACT_SYNONYM)— chebi
CITRIC ACID (EXACT_SYNONYM)— chebi
Citric acid (EXACT_SYNONYM)— chebi
Citronensäure (EXACT_SYNONYM)— chebi
E330 (EXACT_SYNONYM)— chebi
H3cit (EXACT_SYNONYM)— chebi

Cross-references

Equivalent identifiers for this same structure in other resources.

bpdb:1359
cas:77-92-9
drugbank:DB04272
drugcentral:666
gmelin:4240
hmdb:HMDB0000094
kegg.compound:C00158
kegg.drug:D00037
knapsack:C00007619
metacyc.compound:CIT
pdb-ccd:CIT
reaxys:782061
wikipedia.en:Citric_Acid

Activity roles

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

CHEBI:33281 CHEBI:33281

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:30769`	citric acid	`antibioticmech:chebi-a0d7a93731`	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.