KH2PO3 — MIM

Ontology mapping

Primary identifier: cas:13977-65-6
Ontology term: CHEBI:44976 — phosphonic acid
Ontology label: phosphonic acid
Notes: Imported from mim-queue (source_id=mediadive.ingredient:1677); no CAS-RN or CHEBI/NCIT match. Curator review needed. Reviewed on 2026-05-11 as KH2PO3 formula shorthand; left unmapped pending exact salt/protonation evidence.

Synonyms (1)

Synonym	Type	Source	Occurrences
KH2PO3	RAW_TEXT	mim-queue

Chemical properties

Cas rn: 13977-65-6
Data source: Edison LITERATURE deep research

Evidence (1)

DATABASE_MATCH via Edison LITERATURE (PaperQA3) + local CHEBI verification

Potassium phosphite monobasic, KH2PO3. A culture-medium method quoted in the report names it with supplier and CAS RN 13977-65-6, used to replace dipotassium phosphate in phosphorus-modified BG-11. The report states the number should be stored as registry grounding and not presented as an ontology CURIE. CHEBI:44976 phosphonic acid is the parent acid; this record is its monopotassium salt.

Occurrence statistics

Total occurrences: 3
Distinct media: 3

Curation history

Timestamp	Curator	Action	New status	Changes
2026-04-30T18:43:03.698454+00:00	audit_import_ingredients[mim-queue]	CREATED_AS_UNMAPPED	UNMAPPED	Imported from mim-queue (source_id=mediadive.ingredient:1677); no CAS-RN or CHEBI/NCIT match. Curator review needed.
2026-05-11T08:07:24Z	mediaingredientmech-agentic-curation LLM	REVIEWED_FORMULA_SHORTHAND	UNMAPPED	Classified as a single inorganic phosphorus salt and left unmapped because no exact local ontology term for KH2PO3/potassium phosphite form was verified.
2026-08-06T00:00:00+00:00	edison_literature_identity LLM	ANNOTATED		Edison LITERATURE (PaperQA3) identity research; report at research/ingredients/KH2PO3-edison-literature.md (local artifact — research/ is gitignored, so the findings are quoted here rather than linked). Report verdict: ## Executive recommendation — Retain `UNMAPPED`. The label is sufficiently resolved chemically as the defined single salt potassium phosphite monobasic, KH2PO3, CAS RN 13977-65-6, but this review did not verify an exact stable ontology CURIE for that salt. Accordingly, add the chemical identity and literature provenance to the YAML, but create no SSSOM row until an exact ontology recor No ontology CURIE was proposed. Recorded as provenance only — no grounding applied from this run. Edison's recommendations are deliberately conservative, and a plausible identifier promoted by a mechanism that never decided anything is what #203 and #263 exist to undo. Any CURIE above is a curator's to accept or reject.
2026-08-07T00:00:00+00:00	edison_cas_enrichment LLM	ADDED_CAS_RN		Added cas_rn 13977-65-6 (potassium phosphite monobasic) from Edison literature research: the report calls the label "sufficiently resolved chemically as the defined single salt potassium phosphite monobasic, KH2PO3, CAS RN 13977-65-6" on a culture-medium method that names supplier and CAS, and says the number "can be stored as chemical registry grounding but should not be presented as an ontology CURIE" — which is exactly this write. Enrichment only — the mapping status is unchanged, because a CAS identifies a substance without supplying an ontology term. Applied only because the report AFFIRMS the number for this record's own substance: the same scan pulled CAS numbers out of five other reports that forbid them outright (HBO3, α-D-Glucose monohydrate, Larchwood xylan, Sigmacell alpha Type 50, dextran Mw ~1,270), because a CAS printed in a rejected-candidate row looks identical to one in a conclusion.
2026-08-07T00:00:00+00:00	promote_resolved_unmapped	PROMOTED_TO_MAPPED	MAPPED	Promoted UNMAPPED_0411 -> cas:13977-65-6 "phosphonic acid" (NARROW_MATCH); mapping_status UNMAPPED -> MAPPED, SSSOM row added.
2026-08-27T03:16:39.518142+00:00	refresh_occurrence_statistics	CORRECTED		occurrence_statistics 0/0 -> 3/3 (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]