Ontology mapping
- Primary identifier
-
CHEBI:31206 - Ontology label
- ammonium chloride
- kg-microbe node
CHEBI:31206
Nutritional roles
- Role
- NITROGEN_SOURCE
- Confidence
- 1.0
- Evidence
- Reference text
- CultureMech database (3240 occurrences as 'Nitrogen source')
- Reference type
- DATABASE_ENTRY
- Url
- https://github.com/CultureBotAI/CultureMech
- Excerpt
- Role: Nitrogen source; Properties: Defined component, Inorganic compound, Simple component
- Curator note
- Widespread use in media formulations (3240 occurrences). High confidence based on 'Defined component' property.
- Role
- NITROGEN_SOURCE
- Confidence
- 0.7
- Evidence
- Reference type
- COMPUTATIONAL_PREDICTION
- Reference text
- Inferred from CHEBI ancestry: subclass/has_role of CHEBI:24839 (inorganic ammonium salt)
- Curator note
- Provisional role inferred from CHEBI is_a/has_role closure; review recommended.
Synonyms (14)
| Synonym | Type | Source | Occurrences |
|---|---|---|---|
| Role: Nitrogen source; Properties: Defined component, Inorganic compound, Simple component | RAW_TEXT | CultureMech | |
| Role: Nitrogen source; Properties: Defined component, Simple component, Inorganic compound | RAW_TEXT | CultureMech | |
| Role: Nitrogen source; Properties: Inorganic compound, Defined component, Simple component | RAW_TEXT | CultureMech | |
| Role: Nitrogen source; Properties: Inorganic compound, Simple component, Defined component | RAW_TEXT | CultureMech | |
| Role: Nitrogen source; Properties: Simple component, Defined component, Inorganic compound | RAW_TEXT | CultureMech | |
| (NH4)Cl | EXACT_SYNONYM | kg_microbe | |
| Ammonium Chloride | EXACT_SYNONYM | kg_microbe | |
| Ammoniumchlorid | EXACT_SYNONYM | kg_microbe | |
| NH4Cl2 | EXACT_SYNONYM | kg_microbe | |
| [NH4]Cl | EXACT_SYNONYM | kg_microbe | |
| azanium chloride | EXACT_SYNONYM | kg_microbe | |
| NH4Cl(CAS: 12125-02-9) | RAW_TEXT | CultureMech | |
| NH4Cl(Fisher A 649-500) | RAW_TEXT | CultureMech | |
| Ammonium chloride (nitrogen source) | RAW_TEXT | merged_record |
Chemical properties
- Cas rn
- 12125-02-9
- Data source
- CultureBotHT compounds_to_cas.csv
- Retrieval date
- 2026-04-05T21:48:45.572048+00:00
- Molecular formula
- Cl.H4N
- Inchi
- InChI=1S/ClH.H3N/h1H;1H3
- Smiles
- [Cl-].[H][N+]([H])([H])[H]
Evidence (2)
DATABASE_MATCH
via CultureMech
Imported from CultureMech pipeline, quality=DIRECT_MATCH
Additional chemical analysis revealed that the presence of different carbon (the main organic carbon source-acetic acid in TAP or BG-11 + acetic acid medium and inorganic carbon source-Na2CO3 in BG-11 or BG-11 + acetic acid medium) and nitrogen (NH4Cl in TAP medium and NaNO3 in BG-11 or BG-11 + acetic acid medium) species in the growth medium was one of the main factors driving the shift in interaction type.
Auto-proposed; curator should rephrase or remove.
Occurrence statistics
- Total occurrences
- 4,665
- Distinct media
- 4,665
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 |
| 2026-04-05T19:51:04.710870+00:00 | fetch_cas_rn_from_pubchem | ADDED_CAS_RN | MAPPED | Added CAS-RN:12125-02-9 from PubChem API via name lookup (Ammonium chloride) |
| 2026-04-05T21:48:45.572054+00:00 | fetch_cas_rn_from_culturebot_csv | ADDED_CAS_RN | MAPPED | Added CAS-RN:12125-02-9 from CultureBotHT compounds_to_cas.csv (matched: NH4Cl) |
| 2026-04-05T23:46:39.308028+00:00 | fetch_cas_rn_with_preprocessing | ADDED_CAS_RN | MAPPED | Added CAS-RN:7782-50-5 from PubChem API (preprocessed) via name preprocessing ((NH4)Cl) |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 6 synonyms from kg-microbe P4.4 enrichment: (NH4)Cl, Ammonium Chloride, Ammoniumchlorid, NH4Cl2, [NH4]Cl, ... (1 more) |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 6 synonyms from kg-microbe P4.4 enrichment: (NH4)Cl, Ammoniumchlorid, NH4CL, NH4Cl2, [NH4]Cl, ... (1 more) |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 6 synonyms from kg-microbe P4.4 enrichment: Ammonium Chloride, Ammoniumchlorid, NH4CL, NH4Cl2, [NH4]Cl, ... (1 more) |
| 2026-04-19T07:39:40.088622+00:00 | audit_mim_merge | MERGED_FROM_DUPLICATES | MAPPED | Absorbed 2 duplicate MIM record(s) into this one: Ammonium_Chloride.yaml, Nh4cl_2.yaml. Synonyms, curation_history, and occurrence counts were unioned/summed; winner selected by highest occurrence count with preferred_term readability tie-break. |
| 2026-04-19T07:39:40.088267+00:00 | audit_resolve_risky_cas_rn | RESOLVED_CAS_RN_CONFLICT | MAPPED | CAS-RN conflict across merged group (12125-02-9|7782-50-5) resolved via OAK canonical xref: 12125-02-9 (match) |
| 2026-05-01T07:35:35.482074+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (CHEBI primary) | |
| 2026-05-01T08:08:31.569151+00:00 | auto_classify_ingredient_type | AUTO_BACKFILL_CHEBI_CHEMISTRY | molecular_formula=Cl.H4N; inchi=InChI=1S/ClH.H3N/h1H;1H3; smiles=[Cl-].[H][N+]([H])([H])[H] | |
| 2026-05-01T08:09:48.060163+00:00 | auto_classify_ingredient_type | APPLY_EVIDENCE_PROPOSAL | added pmid=39168352 from propose-evidence batch | |
| 2026-05-02T03:12:17.351811+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula)) | |
| 2026-05-05T00:00:00+00:00 | ingredient_mapping_review_2026_05_05 | MERGED | MAPPED | Absorbed duplicate record Nh4cl.yaml (UNMAPPED_0034) into Nh4cl.yaml; source occurrence counts and synonyms were merged. Exact local NH4Cl mapping CHEBI:31206 with matching CAS 12125-02-9. |
| 2026-05-29T23:35:36.112417+00:00 | extract_roles_from_synonyms | ANNOTATED | Added media role: NITROGEN_SOURCE (confidence: 1.00) | |
| 2026-06-09T05:23:46.811984+00:00 | correct_stale_ontology_labels.py | CORRECTED | ontology_label 'NH4Cl' -> 'ammonium chloride': synced to canonical CHEBI label (preferred_term 'NH4Cl' 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 | |
| 2026-08-05T06:56:44.912150+00:00 | merge-same-substance-batch LLM | MERGED_FROM_MAPPED_RECORD | Absorbed CHEBI:31206 'Ammonium chloride (nitrogen source)': 1 synonym(s), occurrences +0/0, role facets from nutritional_roles. Same substance under two names; MERGE_SAME_SUBSTANCE in duplicate_identifier_baseline.tsv (#226). Source: communitymech.ingredient:Ammonium_chloride_(nitrogen_source. | |
| 2026-08-27T03:16:39.519599+00:00 | refresh_occurrence_statistics | CORRECTED | occurrence_statistics 111/3240 -> 4665/4665 (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] |