Ontology mapping
- Primary identifier
-
CHEBI:131383 - Ontology label
- 2,2,4,4,6,8,8-heptamethylnonane
Nutritional roles
- Role
- CARBON_SOURCE
- Confidence
- 0.6
- Evidence
- Reference type
- COMPUTATIONAL_PREDICTION
- Reference text
- Assigned by in-session Claude reasoning (no external API)
- Curator note
- Provisional in-session LLM role assignment; review recommended.
Synonyms (3)
| Synonym | Type | Source | Occurrences |
|---|---|---|---|
| Role: Solvating media | RAW_TEXT | CultureMech | |
| heptamethylnonane | EXACT_SYNONYM | kg_microbe | |
| isocetane | EXACT_SYNONYM | kg_microbe |
Chemical properties
- Cas rn
- 4390-04-9
- Data source
- PubChem API
- Retrieval date
- 2026-04-05T19:50:53.552959+00:00
- Molecular formula
- C16H34
- Inchi
- InChI=1S/C16H34/c1-13(10-14(2,3)4)11-16(8,9)12-15(5,6)7/h13H,10-12H2,1-9H3
- Smiles
- CC(CC(C)(C)C)CC(C)(C)CC(C)(C)C
Evidence (1)
DATABASE_MATCH
via CultureMech
Imported from CultureMech pipeline, quality=DIRECT_MATCH
Occurrence statistics
- Total occurrences
- 12
- Distinct media
- 12
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 |
| 2026-04-05T19:50:53.552982+00:00 | fetch_cas_rn_from_pubchem | ADDED_CAS_RN | MAPPED | Added CAS-RN:4390-04-9 from PubChem API via name lookup (2,2,4,4,6,8,8-Heptamethylnonane) |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 2 synonyms from kg-microbe P4.4 enrichment: heptamethylnonane, isocetane |
| 2026-05-01T07:35:31.781425+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (CHEBI primary) | |
| 2026-05-01T08:08:27.584416+00:00 | auto_classify_ingredient_type | AUTO_BACKFILL_CHEBI_CHEMISTRY | molecular_formula=C16H34; inchi=InChI=1S/C16H34/c1-13(10-14(2,3)4)11-16(8,9)12-15(; smiles=CC(CC(C)(C)C)CC(C)(C)CC(C)(C)C | |
| 2026-05-02T03:12:11.920722+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula)) | |
| 2026-06-09T04:56:30.247721+00:00 | claude_in_session_curation | ANNOTATED | Added media role: CARBON_SOURCE (confidence: 0.60) | |
| 2026-06-09T05:23:46.708720+00:00 | correct_stale_ontology_labels.py | CORRECTED | ontology_label '2,2,4,4,6,8,8-Heptamethylnonane' -> '2,2,4,4,6,8,8-heptamethylnonane': synced to canonical CHEBI label (preferred_term '2,2,4,4,6,8,8-Heptamethylnonane' unchanged). | |
| 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 | |
| 2026-08-27T03:16:39.518254+00:00 | refresh_occurrence_statistics | CORRECTED | occurrence_statistics 10/10 -> 12/12 (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] |