Tween 20

CHEBI:53424 chemically defined MAPPED CHEBI SYNONYM_MATCH

Ontology mapping

Primary identifier
CHEBI:53424
Ontology label
polysorbate 20
kg-microbe node
CHEBI:53424

Physicochemical roles

Synonyms (1)

SynonymTypeSourceOccurrences
Role: Surfactant; Properties: Defined component, Organic compound, Simple component RAW_TEXT CultureMech

Chemical properties

Cas rn
9005-64-5
Data source
CultureBotHT compounds_to_cas.csv
Retrieval date
2026-04-05T21:48:45.929939+00:00
Molecular formula
(C2H4O)w.(C2H4O)x.(C2H4O)y.(C2H4O)z.C18H34O6
Inchi
InChI=1S/C26H50O10/c1-2-3-4-5-6-7-8-9-10-11-24(30)34-19-18-31-20-22(32-15-12-27)26-25(35-17-14-29)23(21-36-26)33-16-13-28/h22-23,25-29H,2-21H2,1H3/t22?,23?,25-,26-/m1/s1
Smiles
[H][C@]1(C(COCCOC(=O)CCCCCCCCCCC)OCCO)OCC(OCCO)[C@H]1OCCO

Evidence (1)

DATABASE_MATCH via CultureMech

Imported from CultureMech pipeline, quality=DIRECT_MATCH

Occurrence statistics

Total occurrences
4
Distinct media
4

Curation history

TimestampCuratorActionNew statusChanges
2026-03-09T06:54:18.022301+00:00 import_from_culturemech IMPORTED MAPPED Initial import from CultureMech pipeline
2026-04-05T21:48:45.929943+00:00 fetch_cas_rn_from_culturebot_csv ADDED_CAS_RN MAPPED Added CAS-RN:9005-64-5 from CultureBotHT compounds_to_cas.csv (matched: Tween 20)
2026-04-19T01:05:11.483996+00:00 cbclaw_sssom_review_fix CORRECTED_ONTOLOGY_ID MAPPED Corrected ontology_id CHEBI:9784 -> CHEBI:53424 (old label: 'Tween 20', new label: 'polysorbate 20'). Reason: Previous CHEBI:9784 no longer resolves in CHEBI. Stripped 0 kg_microbe-sourced synonyms that were contaminated by the wrong CHEBI.
2026-05-01T07:35:36.784406+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (CHEBI primary)
2026-05-01T08:08:32.866721+00:00 auto_classify_ingredient_type AUTO_BACKFILL_CHEBI_CHEMISTRY molecular_formula=(C2H4O)w.(C2H4O)x.(C2H4O)y.(C2H4O)z.C18H34O6; inchi=InChI=1S/C26H50O10/c1-2-3-4-5-6-7-8-9-10-11-24(30); smiles=[H][C@]1(C(COCCOC(=O)CCCCCCCCCCC)OCCO)OCC(OCCO)[C@
2026-05-02T03:12:19.081607+00:00 auto_classify_ingredient_type AUTO_CLASSIFY_INGREDIENT_TYPE set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-29T23:35:36.113285+00:00 extract_roles_from_synonyms ANNOTATED Added media role: SURFACTANT (confidence: 1.00)
2026-07-20T00:00:00+00:00 migrate_media_roles_to_facets ANNOTATED Migrated legacy media_roles to role facets (#128): SURFACTANT -> physicochemical_roles.SURFACTANT
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 'polysorbate 20'; it matches the ChEBI synonym 'Tween 20' on CHEBI:53424. 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).
2026-08-27T03:16:39.520037+00:00 refresh_occurrence_statistics CORRECTED occurrence_statistics 2/2 -> 4/4 (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]
2026-09-09T00:00:00+00:00 fix_kg_microbe_node_id_drift CORRECTED kg_microbe_node_id CHEBI:9784 -> CHEBI:53424 (#554). The compatibility node id lagged a same-prefix identifier correction; the downstream node id must match the curated identifier unless a record intentionally crosses CURIE prefixes.