Ontology mapping
- Primary identifier
-
CHEBI:91247 - Ontology label
- L-cysteine hydrochloride
Nutritional roles
- Role
- AMINO_ACID_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.
Synonyms (14)
| Synonym | Type | Source | Occurrences |
|---|---|---|---|
| (add to make medium anoxic) | RAW_TEXT | CultureMech | |
| Cysteine-HCl | EXACT_SYNONYM | merged_from_duplicate_mim_record | |
| (1R)-1-carboxy-2-sulfanylethan-1-aminium chloride | EXACT_SYNONYM | kg_microbe | |
| (R)-Cysteine hydrochloride | EXACT_SYNONYM | kg_microbe | |
| Cysteine monohydrochloride | EXACT_SYNONYM | kg_microbe | |
| L-(+)-Cysteine hydrochloride | EXACT_SYNONYM | kg_microbe | |
| L-Cysteine monohydrochloride | EXACT_SYNONYM | kg_microbe | |
| L-Cysteiniumchloride | EXACT_SYNONYM | kg_microbe | |
| L-cysteinium chloride | EXACT_SYNONYM | kg_microbe | |
| L-Cysteine . HCl | RAW_TEXT | culturemech:output/ingredient_occurrences.tsv | |
| L--cysteine・HCl | RAW_TEXT | culturemech:output/ingredient_occurrences.tsv | |
| Cysteine.HCl | RAW_TEXT | culturemech:output/ingredient_occurrences.tsv | |
| L-cysteine · HCl | RAW_TEXT | culturemech:output/ingredient_occurrences.tsv | |
| cysteine . HCl | RAW_TEXT | culturemech:output/ingredient_occurrences.tsv |
Rejected enrichment labels (1)
Provenance-only candidates: these are not synonyms and do not resolve to this record.
| Rejected label | Disposition | Source | Occurrences |
|---|---|---|---|
| N-(9-{2-[(4-{[(2,5-dioxopyrrolidin-1-yl)oxy]carbonyl}piperidin-1-yl)sulfonyl]phenyl}-6-[methyl(4-sulfophenyl)amino]-3H-xanthen-3-ylidene)-N-methyl-4-sulfoanilinium | REJECTED_LABEL | kg_microbe |
Chemical properties
- Cas rn
- 52-89-1
- Data source
- OAK/CHEBI xref
- Retrieval date
- 2026-04-19T07:39:40.088267+00:00
- Molecular formula
- C3H7NO2S.HCl
- Inchi
- InChI=1S/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,(H,5,6);1H/t2-;/m0./s1
- Smiles
- Cl.N[C@@H](CS)C(=O)O
Evidence (1)
DATABASE_MATCH
via CultureMech
Imported from CultureMech pipeline, quality=DIRECT_MATCH
Occurrence statistics
- Total occurrences
- 302
- Distinct media
- 302
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 |
| 2026-04-05T19:51:40.250803+00:00 | fetch_cas_rn_from_pubchem | ADDED_CAS_RN | MAPPED | Added CAS-RN:200-157-7 from PubChem API via name lookup (Cysteine-HCl) |
| 2026-04-05T21:48:45.253625+00:00 | fetch_cas_rn_from_culturebot_csv | ADDED_CAS_RN | MAPPED | Added CAS-RN:7048-04-6 from CultureBotHT compounds_to_cas.csv (matched: L-Cysteine HCl) |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | ADDED_SYNONYMS | MAPPED | Added 8 synonyms from kg-microbe P4.4 enrichment: (1R)-1-carboxy-2-sulfanylethan-1-aminium chloride, (R)-Cysteine hydrochloride, Cysteine monohydrochloride, L-(+)-Cysteine hydrochloride, L-Cysteine monohydrochloride, ... (3 more) |
| 2026-04-18T00:00:00+00:00 | cbclaw_kg_microbe_sweep LLM | REMAPPED | MAPPED | Remapped CHEBI:52891 (QSY9 succinimidyl ester, a fluorescence quencher) → CHEBI:91247 (L-cysteine hydrochloride). Original CHEBI was unrelated compound. Also corrected CAS-RN 200-157-7 (EINECS number, not a CAS) → 52-89-1 (the real CAS-RN for L-cysteine hydrochloride anhydrous, confirmed via PubChem). |
| 2026-04-19T01:05:11.454201+00:00 | cbclaw_sssom_review_fix | CORRECTED_ONTOLOGY_ID | MAPPED | Corrected ontology_id CHEBI:52891 -> CHEBI:91247 (old label: 'L-Cysteine HCl', new label: 'L-cysteine hydrochloride'). Reason: Previous CHEBI:52891 was QSY9 succinimidyl ester — unrelated. Stripped 8 kg_microbe-sourced synonyms that were contaminated by the wrong CHEBI. |
| 2026-04-19T07:39:40.088622+00:00 | audit_mim_merge | MERGED_FROM_DUPLICATES | MAPPED | Absorbed 1 duplicate MIM record(s) into this one: Cysteine-hcl.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 (52-89-1|7048-04-6) resolved via OAK canonical xref: 52-89-1 (match) |
| 2026-05-01T07:35:34.321484+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (CHEBI primary) | |
| 2026-05-01T08:08:30.327216+00:00 | auto_classify_ingredient_type | AUTO_BACKFILL_CHEBI_CHEMISTRY | molecular_formula=C3H7NO2S.HCl; inchi=InChI=1S/C3H7NO2S.ClH/c4-2(1-7)3(5)6;/h2,7H,1,4H2,; smiles=Cl.N[C@@H](CS)C(=O)O | |
| 2026-05-02T03:12:15.476127+00:00 | auto_classify_ingredient_type | AUTO_CLASSIFY_INGREDIENT_TYPE | set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula)) | |
| 2026-06-03T02:06:01.743390+00:00 | infer_roles_from_name_lists | ANNOTATED | Added media role: AMINO_ACID_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): AMINO_ACID_SOURCE -> nutritional_roles.AMINO_ACID_SOURCE | |
| 2026-08-27T03:16:39.519125+00:00 | refresh_occurrence_statistics | CORRECTED | occurrence_statistics 72/154 -> 302/302 (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] | |
| 2026-08-30T04:48:06.233536+00:00 | claude_culturemech_alias_backfill | ADDED_SYNONYMS | Added 5 CultureMech recipe surface form(s) that folded onto this record's published label but were absent from MIM's label index, so CultureMech could not resolve them: 'L-Cysteine . HCl' (x19 CultureMech mentions); 'L--cysteine・HCl' (x2 CultureMech mentions); 'Cysteine.HCl' (x1 CultureMech mentions); 'L-cysteine · HCl' (x1 CultureMech mentions); 'cysteine . HCl' (x1 CultureMech mentions). Source: culturemech:output/ingredient_occurrences.tsv. | |
| 2026-09-21T03:52:08Z | retire_wrong_compound_synonyms LLM | CORRECTED | Marked 1 synonym(s) non-resolving: ['N-(9-{2-[(4-{[(2,5-dioxopyrrolidin-1-yl)oxy]carbonyl}piperidin-1-yl)sulfonyl]phenyl}-6-[methyl(4-sulfophenyl)amino]-3H-xanthen-3-ylidene)-N-methyl-4-sulfoanilinium']. ChEBI gives these names to CHEBI:52891, not to this record's CHEBI:91247 -- L-cysteine hydrochloride is not the QSY9 dye at CHEBI:52891 -- its CAS 52-89-1 read as an accession. Kept as REJECTED_LABEL so a rebuild cannot restore them from kg-microbe's synonym list (#669). |