Iron

CHEBI:82664 chemically defined MAPPED CHEBI EXACT_MATCH

Ontology mapping

Primary identifier
CHEBI:82664
Ontology label
iron(0)

Nutritional roles

Synonyms (7)

SynonymTypeSourceOccurrences
Iron EXACT_SYNONYM chebi_synonym_review
Iron powder RAW_TEXT MERGED_FROM_CHEBI:82664
Fe(0) RAW_TEXT MERGED_FROM_CHEBI:82664
Fen RAW_TEXT MERGED_FROM_CHEBI:82664
Iron metal RAW_TEXT MERGED_FROM_CHEBI:82664
iron dust RAW_TEXT MERGED_FROM_CHEBI:82664
iron(0) RAW_TEXT MERGED_FROM_CHEBI:82664

Rejected enrichment labels (6)

Provenance-only candidates: these are not synonyms and do not resolve to this record.

Rejected labelDispositionSourceOccurrences
26Fe REJECTED_LABEL kg_microbe
Eisen REJECTED_LABEL kg_microbe
fer REJECTED_LABEL kg_microbe
ferrum REJECTED_LABEL kg_microbe
hierro REJECTED_LABEL kg_microbe
iron atom REJECTED_LABEL kg_microbe

Chemical properties

Cas rn
7439-89-6
Data source
PubChem (via CHEBI:82664)
Retrieval date
2026-04-09T00:32:50.689620+00:00
Molecular formula
Fe
Inchi
InChI=1S/Fe
Smiles
[Fe]

Evidence (1)

CURATOR_JUDGMENT via MIM curation (#631)

CultureMech supplies Iron as a weighable grams-per-liter element, and MIM already curated Iron powder and Iron metal source labels to ChEBI iron(0), not to the ChEBI iron atom.

Occurrence statistics

Total occurrences
7
Distinct media
7

Curation history

TimestampCuratorActionNew statusChanges
2026-03-09T06:54:18.022301+00:00 import_from_culturemech IMPORTED MAPPED Initial import from CultureMech pipeline
2026-04-05T19:52:26.778033+00:00 fetch_cas_rn_from_pubchem ADDED_CAS_RN MAPPED Added CAS-RN:7439-89-6 from PubChem API via name lookup (Iron)
2026-04-18T00:00:00+00:00 cbclaw_kg_microbe_sweep LLM ADDED_SYNONYMS MAPPED Added 6 synonyms from kg-microbe P4.4 enrichment: 26Fe, Eisen, fer, ferrum, hierro, ... (1 more)
2026-05-01T07:35:34.080015+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:30.068374+00:00 auto_classify_ingredient_type AUTO_BACKFILL_CHEBI_CHEMISTRY molecular_formula=Fe; inchi=InChI=1S/Fe; smiles=[Fe]
2026-05-02T03:12:15.136071+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-06-09T05:23:46.778142+00:00 correct_stale_ontology_labels.py CORRECTED ontology_label 'Iron' -> 'iron atom': synced to canonical CHEBI label (preferred_term 'Iron' unchanged).
2026-08-27T03:16:39.519019+00:00 refresh_occurrence_statistics CORRECTED occurrence_statistics 1/1 -> 2/2 (media_count/total_occurrences), derived from distinct CultureMech recipe ids in the #337 occurrence table. The prior values came from the importer retired in #453, whose media_count counted a list truncated to 50 examples (#449). [source=ingredient_occurrences.tsv culturemech_rev=15a4da5c08 rows=194137 distinct_recipes=15257]
2026-09-11T23:46:36.251078+00:00 fix_element_atom_overclaims MERGED_FROM_MAPPED_RECORD MAPPED identifier CHEBI:18248 -> CHEBI:82664; retargeted from ChEBI iron atom to iron(0), absorbed the Iron powder record, moved 2 atom memberships onto the 5 existing iron(0) memberships, carried 6 iron(0) label(s), and retained 6 atom-only synonym(s) as REJECTED_LABEL (#631).