1,4-B-D-Galactobiose

Ontology mapping

Primary identifier: cas:2152-98-9
Ontology term: CHEBI:36226 — beta-D-galactopyranosyl-(1->4)-D-galactopyranose
Ontology label: beta-D-galactopyranosyl-(1->4)-D-galactopyranose

Nutritional roles

Role
CARBON_SOURCE
Confidence
0.8
Evidence
- Reference type
  COMPUTATIONAL_PREDICTION
  Reference text
  Inferred from curated media-role name pattern
  Curator note
  Provisional role from a curated name-pattern rule; review recommended.

Chemical properties

Cas rn: 2152-98-9
Data source: CultureBotHT compounds_to_cas.csv
Retrieval date: 2026-04-29T06:51:33.117170+00:00
Molecular formula: C12H22O11
Smiles: C(C1C(C(C(C(O1)OC2C(OC(C(C2O)O)O)CO)O)O)O)O
Inchi: InChI=1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)23-10-4(2-14)21-11(20)8(18)7(10)17/h3-20H,1-2H2/t3-,4-,5+,6+,7-,8-,9-,10+,11?,12+/m1/s1
Pubchem cid: 9548802

Evidence (3)

DATABASE_MATCH via CultureBotHT

Imported from CultureBotHT. CAS-RN 2152-98-9 / 6206-28-6 present, but no CHEBI entry exists (checked OAK CHEBI sqlite + PubChem CID synonyms). Curator can promote to a CHEBI primary if/when CHEBI adds the term.

DATABASE_MATCH via CHEBI via PubChem (pubchem-xref)

Parent class identified via pubchem-xref; matched_via='pubchem CID 9548802'

DATABASE_MATCH via MIM curation (#326)

mapping_quality NARROW_MATCH -> SYNONYM_MATCH. The recorded molecular_formula is identical to CHEBI:36226's, and a 'parent' with an identical formula is not a parent — BACKFILL_PARENT_CHEBI found the term via a PubChem xref and filed it as one. Identity confirmed by InChIKey (GUBGYTABKSRVRQ-HEJLOQJISA-N): the record's own cas_rn, written from CultureBotHT compounds_to_cas.csv at creation and so independent of this mapping, resolves in PubChem to the same key ChEBI records for the term. ontology_id is unchanged.

Occurrence statistics

Total occurrences: 0
Distinct media: 0

Curation history

Timestamp	Curator	Action	New status	Changes
2026-04-29T06:51:33.117170+00:00	audit_add_remaining_culturebotht	CREATED_FROM_CAS_FALLBACK	MAPPED	Created with cas:2152-98-9 / 6206-28-6 as primary identifier; no CHEBI entry exists for this compound.
2026-05-01T07:35:31.682827+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (cas: primary (defined chemical))
2026-05-02T02:51:05.757655+00:00	auto_classify_ingredient_type	AUTO_BACKFILL_PUBCHEM_CHEMISTRY		molecular_formula=C12H22O11; smiles=C(C1C(C(C(C(O1)OC2C(OC(C(C2O)O)O)CO)O)O)O)O; inchi=InChI=1S/C12H22O11/c13-1-3-5(15)6(16)9(19)12(22-3)
2026-05-02T03:12:11.791574+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-02T04:36:06.871431+00:00	backfill_parent_terms	BACKFILL_PARENT_CHEBI		set ontology_mapping parent=CHEBI:36226 (pubchem-xref)
2026-06-03T02:06:01.730391+00:00	infer_roles_from_name_lists	ANNOTATED		Added media role: CARBON_SOURCE (confidence: 0.80)
2026-07-20T00:00:00+00:00	migrate_media_roles_to_facets	ANNOTATED		Migrated legacy media_roles to role facets (#128): CARBON_SOURCE -> nutritional_roles.CARBON_SOURCE
2026-08-13T00:00:00+00:00	regrade_identical_formula_parents	REGRADED_PARENT_TO_IDENTITY		mapping_quality NARROW_MATCH -> SYNONYM_MATCH (#326); the narrowMatch parent is the same substance, confirmed by InChIKey via the record's own CAS.