Sodium glutamate monohydrate

Ontology mapping

Primary identifier: CHEBI:232425
Ontology label: monosodium L-glutamate hydrate

Nutritional roles

Role
NITROGEN_SOURCE
Confidence
1.0
Evidence
- Reference type
  DATABASE_ENTRY
  Reference text
  Imported from CultureMech pipeline
  Curator note
  Original role text: Nitrogen Source

Synonyms (14)

Synonym	Type	Source
Role: Nitrogen source; Properties: Defined component, Simple component, Organic compound	RAW_TEXT	CultureMech
Role: Nitrogen source; Properties: Organic compound, Defined component, Simple component	RAW_TEXT	CultureMech
sodium (2S)-2-azaniumylpentanedioate	EXACT_SYNONYM	chebi_synonym_review
Glutamate Sodium	RAW_TEXT	sssom_other_backfill
Glutamate monosodium salt	RAW_TEXT	sssom_other_backfill
Glutamic acid, monosodium salt	RAW_TEXT	sssom_other_backfill
Glutammato monosodico	RAW_TEXT	sssom_other_backfill
L(+) Sodium glutamate	RAW_TEXT	sssom_other_backfill
MSG	RAW_TEXT	sssom_other_backfill
Monosodioglutammato	RAW_TEXT	sssom_other_backfill
Natrium L-hydrogenglutamat	RAW_TEXT	sssom_other_backfill
Natriumglutaminat	RAW_TEXT	sssom_other_backfill
Sodium hydrogen glutamate	RAW_TEXT	sssom_other_backfill
sodium (2S)-2-ammoniopentanedioate	RAW_TEXT	sssom_other_backfill

Chemical properties

Cas rn: 6106-04-3
Data source: PubChem API
Retrieval date: 2026-04-05T19:53:51.816519+00:00
Molecular formula: C5H8NO4.H2O.Na
Inchi: InChI=1S/C5H9NO4.Na/c6-3(5(9)10)1-2-4(7)8;/h3H,1-2,6H2,(H,7,8)(H,9,10);/q;+1/p-1/t3-;/m0./s1
Smiles: [NH3+][C@@H](CCC(=O)[O-])C(=O)[O-].[Na+]

Evidence (2)

DATABASE_MATCH via CultureMech

Imported from CultureMech pipeline, quality=DIRECT_MATCH

DATABASE_MATCH via MIM curation (#321)

molecular_formula 'C5H8NO4.Na' -> 'C5H8NO4.H2O.Na'. The recorded value described the anhydrous salt while the label names a hydrate, understating the mass by 18 g/mol per water. Corrected because adopted verbatim from the mapped term CHEBI:232425 ('monosodium L-glutamate hydrate'), which is the specific hydrate and already carries the water.

Occurrence statistics

Total occurrences: 16
Distinct media: 16

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
2026-04-05T19:53:51.816563+00:00	fetch_cas_rn_from_pubchem	ADDED_CAS_RN	MAPPED	Added CAS-RN:6106-04-3 from PubChem API via name lookup (Sodium glutamate monohydrate)
2026-05-01T07:35:36.269892+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:32.362803+00:00	auto_classify_ingredient_type	AUTO_BACKFILL_CHEBI_CHEMISTRY		molecular_formula=C5H8NO4.Na; inchi=InChI=1S/C5H9NO4.Na/c6-3(5(9)10)1-2-4(7)8;/h3H,1-2; smiles=[NH3+][C@@H](CCC(=O)[O-])C(=O)[O-].[Na+]
2026-05-02T03:12:18.397296+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-29T23:35:36.112830+00:00	extract_roles_from_synonyms	ANNOTATED		Added media role: NITROGEN_SOURCE (confidence: 1.00)
2026-06-09T05:23:46.834675+00:00	correct_stale_ontology_labels.py	CORRECTED		ontology_label 'Sodium glutamate monohydrate' -> 'monosodium L-glutamate': synced to canonical CHEBI label (preferred_term 'Sodium glutamate monohydrate' unchanged).
2026-07-20T00:00:00+00:00	migrate_media_roles_to_facets	ANNOTATED		Migrated legacy media_roles to role facets (#128): NITROGEN_SOURCE -> nutritional_roles.NITROGEN_SOURCE
2026-08-05T04:24:08.299781+00:00	salt-hydrate-identity-fix LLM	CORRECTED	MAPPED	Re-grounded CHEBI:64243 'monosodium L-glutamate' -> CHEBI:232425 'monosodium L-glutamate hydrate' (EXACT_MATCH). The record is the monohydrate: its cas_rn 6106-04-3 was set by an independent PubChem name lookup on 'Sodium glutamate monohydrate', and CHEBI:232425 'monosodium L-glutamate hydrate' (formula C5H8NO4.H2O.Na) is the matching term. It was on CHEBI:64243 (anhydrous, ChEBI CAS xref 142-47-2) only because the specific term was never found. Monohydrate 187.13 vs anhydrous 169.11 g/mol is a 10.6% weigh-out difference across the 11 media using it.
2026-08-13T00:00:00+00:00	add_water_of_hydration	ADDED_WATER_OF_HYDRATION		molecular_formula 'C5H8NO4.Na' -> 'C5H8NO4.H2O.Na' (#321); adopted verbatim from the mapped term CHEBI:232425 ('monosodium L-glutamate hydrate'), which is the specific hydrate and already carries the water.
2026-08-27T03:16:39.519845+00:00	refresh_occurrence_statistics	CORRECTED		occurrence_statistics 11/11 -> 16/16 (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]
2026-09-02T17:40:44.716277+00:00	claude_sssom_surface_form_backfill	ADDED_SYNONYMS		Recovered 1 surface form(s) that the published SSSOM `other` carried but no curated record did, so a rebuild would have dropped them from KGX: 'Glutamate Sodium'. Tokens already present on the kg-microbe ontology node were left out as redundant (#520).
2026-09-02T22:41:49.137449+00:00	claude_sssom_surface_form_backfill	ADDED_SYNONYMS		Recovered 10 surface form(s) that the published SSSOM `other` carried but no curated record did, so a rebuild would have dropped them from KGX: 'Glutamate monosodium salt'; 'Glutamic acid, monosodium salt'; 'Glutammato monosodico'; 'L(+) Sodium glutamate'; 'MSG'; 'Monosodioglutammato'; 'Natrium L-hydrogenglutamat'; 'Natriumglutaminat'; 'Sodium hydrogen glutamate'; 'sodium (2S)-2-ammoniopentanedioate'. Tokens already present on the kg-microbe ontology node were left out as redundant (#520).