Mg-citrate

Ontology mapping

Primary identifier: CHEBI:131391
Ontology label: trimagnesium dicitrate

Synonyms (4)

Synonym	Type	Source
E345	EXACT_SYNONYM	kg_microbe
Magnesium citrate dibasic	EXACT_SYNONYM	kg_microbe
Magnesium hydrogen citrate	EXACT_SYNONYM	kg_microbe
magnesium 3-carboxy-3-hydroxypentanedioate	EXACT_SYNONYM	kg_microbe

Chemical properties

Cas rn: 3344-18-1
Data source: PubChem API (preprocessed)
Retrieval date: 2026-04-05T23:45:05.202918+00:00
Molecular formula: C6H6O7.Mg
Inchi: InChI=1S/C6H8O7.Mg/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);/q;+2/p-2
Smiles: O=C([O-])CC(O)(CC(=O)[O-])C(=O)O.[Mg+2]

Evidence (2)

DATABASE_MATCH via CultureMech

Imported from CultureMech pipeline, quality=DIRECT_MATCH

DATABASE_MATCH via MIM curation (#320)

identifier/ontology_id CHEBI:131389 ('magnesium citrate') -> CHEBI:131391 ('trimagnesium dicitrate'). The record's own cas_rn 3344-18-1 is registered by ChEBI against CHEBI:131391, which is the 3:2 magnesium:citrate salt of the term the record previously carried. Curation decision on #320: where the CAS names a more specific FORM than the label, the CAS governs — the recipe is taken to mean the substance actually weighed out. These surfaced as 'unrelated' in the ancestry triage only because ChEBI does not model salt-of / hydrate-of / racemate-of as subsumption, the same gap #342 recorded for hydrates.

Occurrence statistics

Total occurrences: 5
Distinct media: 5

Curation history

Timestamp	Curator	Action	New status	Changes
2026-03-09T06:54:18.022301+00:00	import_from_culturemech	IMPORTED	MAPPED	Initial import from CultureMech pipeline
2026-04-05T23:45:05.202927+00:00	fetch_cas_rn_with_preprocessing	ADDED_CAS_RN	MAPPED	Added CAS-RN:3344-18-1 from PubChem API (preprocessed) via name preprocessing (Mg-citrate)
2026-04-18T00:00:00+00:00	cbclaw_kg_microbe_sweep LLM	ADDED_SYNONYMS	MAPPED	Added 4 synonyms from kg-microbe P4.4 enrichment: E345, Magnesium citrate dibasic, Magnesium hydrogen citrate, magnesium 3-carboxy-3-hydroxypentanedioate
2026-05-01T07:35:34.743545+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:30.783212+00:00	auto_classify_ingredient_type	AUTO_BACKFILL_CHEBI_CHEMISTRY		molecular_formula=C6H6O7.Mg; inchi=InChI=1S/C6H8O7.Mg/c7-3(8)1-6(13,5(11)12)2-4(9)10;; smiles=O=C([O-])CC(O)(CC(=O)[O-])C(=O)O.[Mg+2]
2026-05-02T03:12:16.415277+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-06-09T05:23:46.796407+00:00	correct_stale_ontology_labels.py	CORRECTED		ontology_label 'Mg-citrate' -> 'magnesium citrate': synced to canonical CHEBI label (preferred_term 'Mg-citrate' unchanged).
2026-08-10T00:00:00+00:00	regrade_synonym_matches	REGRADED_EXACT_TO_SYNONYM		mapping_quality EXACT_MATCH -> SYNONYM_MATCH (#317). The record's label does not equal the term's primary label 'magnesium citrate'; it matches the ChEBI synonym 'Magnesium hydrogen citrate' on CHEBI:131389. The schema defines EXACT_MATCH as a direct match to the term and SYNONYM_MATCH as a match to a known synonym, so the recorded grade overstated. ontology_id is unchanged — the term is correct. The SSSOM predicate is unaffected (both grades emit skos:exactMatch).
2026-08-13T00:00:00+00:00	reground_cas_specific_form	REGROUNDED_TO_CAS_SPECIFIC_FORM		identifier/ontology_id CHEBI:131389 -> CHEBI:131391 'trimagnesium dicitrate' (#320); the record's CAS 3344-18-1 denotes the 3:2 magnesium:citrate salt. mapping_quality -> SYNONYM_MATCH.
2026-08-27T03:16:39.519291+00:00	refresh_occurrence_statistics	CORRECTED		occurrence_statistics 4/4 -> 5/5 (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]