Na-glutamate

CHEBI:64243 chemically defined REJECTED CHEBI SYNONYM_MATCH

Ontology mapping

Primary identifier
CHEBI:64243
Ontology label
monosodium L-glutamate

Nutritional roles

Synonyms (3)

SynonymTypeSourceOccurrences
Role: Nitrogen source; Properties: Simple component, Organic compound, Defined component RAW_TEXT CultureMech
(2S)-2-aminopentanedioate EXACT_SYNONYM kg_microbe
L-glutamic acid dianion EXACT_SYNONYM kg_microbe

Rejected enrichment labels (1)

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

Rejected labelDispositionSourceOccurrences
L-glutamate REJECTED_LABEL chebi_synonym_review

Chemical properties

Cas rn
16177-21-2
Data source
PubChem API (preprocessed)
Retrieval date
2026-04-05T23:45:38.626218+00:00
Molecular formula
C5H7NO4
Inchi
InChI=1S/C5H9NO4/c6-3(5(9)10)1-2-4(7)8/h3H,1-2,6H2,(H,7,8)(H,9,10)/p-2/t3-/m0/s1
Smiles
N[C@@H](CCC(=O)[O-])C(=O)[O-]

Evidence (1)

DATABASE_MATCH via CultureMech

Imported from CultureMech pipeline, quality=DIRECT_MATCH

Occurrence statistics

Total occurrences
0
Distinct media
0

Curation history

TimestampCuratorActionNew statusChanges
2026-03-09T06:54:18.022301+00:00 import_from_culturemech IMPORTED MAPPED Initial import from CultureMech pipeline
2026-04-05T23:45:38.626229+00:00 fetch_cas_rn_with_preprocessing ADDED_CAS_RN MAPPED Added CAS-RN:16177-21-2 from PubChem API (preprocessed) via name preprocessing (Na-glutamate)
2026-04-18T00:00:00+00:00 cbclaw_kg_microbe_sweep LLM ADDED_SYNONYMS MAPPED Added 2 synonyms from kg-microbe P4.4 enrichment: (2S)-2-aminopentanedioate, L-glutamic acid dianion
2026-05-01T07:35:35.027523+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:31.088121+00:00 auto_classify_ingredient_type AUTO_BACKFILL_CHEBI_CHEMISTRY molecular_formula=C5H7NO4; inchi=InChI=1S/C5H9NO4/c6-3(5(9)10)1-2-4(7)8/h3H,1-2,6H2; smiles=N[C@@H](CCC(=O)[O-])C(=O)[O-]
2026-05-02T03:12:16.811957+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-29T23:35:36.112052+00:00 extract_roles_from_synonyms ANNOTATED Added media role: NITROGEN_SOURCE (confidence: 1.00)
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
2026-08-10T00:00:00+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 'L-glutamate(2-)'; it matches the ChEBI synonym '(2S)-2-aminopentanedioate' on CHEBI:29988. 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).
2026-08-10T00:00:00+00:00 merge_salt_label_duplicates MERGED_INTO Merged into CHEBI:64243 'Sodium L-glutamate'; occurrences transferred. Tombstoned REJECTED, SSSOM rows dropped. Same substance under two names — the abbreviated `Na-` prefix is why the earlier merge pass missed it (#315).
2026-08-15T00:00:00+00:00 fix_tombstone_pointers REFRESHED_TOMBSTONE_ONTOLOGY_ID ontology_id CHEBI:29988 -> CHEBI:64243 (#360). The merge set identifier and status but left ontology_mapping untouched, so this tombstone kept advertising a term it no longer asserts — anything indexing by ontology_id routed through it. Now agrees with the merge target 'Sodium L-glutamate'. Provenance is unaffected: what the record used to assert is in this history.
2026-09-23T06:21:57.561780+00:00 claude LLM REJECTED_WRONG_FORM_SYNONYMS REJECTED Retyped REJECTED_LABEL: 'L-glutamate' (EXACT_SYNONYM): the anion's name on the monosodium L-glutamate CHEBI:64243 tombstone (#232). The token is kept as provenance only; it must not resolve, be exported, or enter the SSSOM other column.