Na2-citrate

cas:144-33-2 chemically defined MAPPED CHEBI NARROW_MATCH

Ontology mapping

Primary identifier
cas:144-33-2
Ontology term
CHEBI:30769 — citric acid
Ontology label
citric acid

Synonyms (3)

SynonymTypeSourceOccurrences
Na2-citrate RAW_TEXT CultureMech
disodium hydrogen citrate EXACT_SYNONYM PubChem CID 8950
disodium citrate RELATED_SYNONYM PubChem CID 8950

Chemical properties

Cas rn
144-33-2
Molecular formula
C6H6Na2O7
Data source
PubChem CID 8950 (CAS 144-33-2)
Retrieval date
2026-09-24T07:48:22.811507+00:00

Evidence (1)

MANUAL_CURATION via MIM curation (#704); PubChem CID 8950; chebi.db

Na2-citrate is disodium hydrogen citrate (PubChem CID 8950, CAS 144-33-2, C6H6Na2O7, InChIKey CEYULKASIQJZGP-UHFFFAOYSA-L). ChEBI has no disodium citrate term, and three CultureMech recipes name it, so MAPPING_SEMANTICS Section 3 step 2 applies: cas: identity, broadMatch to the acid the label's salt derives from (CHEBI:30769 citric acid), Rule B1 registry row. Previously an EXACT_SYNONYM on Trisodium_Citrate after a 2026-04-19 merge that conflated the two salts (#704).

Occurrence statistics

Total occurrences
3
Distinct media
3

Curation history

TimestampCuratorActionNew statusChanges
2026-09-24T07:48:22.811524+00:00 claude LLM CREATED MAPPED Created from the raw label 'Na2-citrate' split off Trisodium_Citrate. Na2-citrate is disodium hydrogen citrate (PubChem CID 8950, CAS 144-33-2, C6H6Na2O7, InChIKey CEYULKASIQJZGP-UHFFFAOYSA-L). ChEBI has no disodium citrate term, and three CultureMech recipes name it, so MAPPING_SEMANTICS Section 3 step 2 applies: cas: identity, broadMatch to the acid the label's salt derives from (CHEBI:30769 citric acid), Rule B1 registry row. Previously an EXACT_SYNONYM on Trisodium_Citrate after a 2026-04-19 merge that conflated the two salts (#704).
2026-09-24T07:50:13.754866+00:00 claude LLM REFRESHED_OCCURRENCE_STATISTICS MAPPED occurrence_statistics 0/0 -> 3/3 after the #704 identity split/re-grounding moved recipe memberships.