dextran, Mw ~1,270

UNMAPPED_0167 chemically defined UNMAPPED

Ontology mapping

Primary identifier
UNMAPPED_0167
Notes
Imported from CultureBotHT (compounds_to_cas.csv (no CAS-RN)). No CAS-RN or CHEBI mapping available; curator review needed. Reviewed on 2026-05-11 as a Mw-specific dextran fraction; not identity-mapped to generic Dextran.

Synonyms (1)

SynonymTypeSourceOccurrences
dextran, Mw ~1,270 RAW_TEXT culturebotht

Occurrence statistics

Total occurrences
0
Distinct media
0

Curation history

TimestampCuratorActionNew statusChanges
2026-04-29T06:51:33.117170+00:00 audit_add_remaining_culturebotht CREATED_AS_UNMAPPED UNMAPPED Imported from CultureBotHT (compounds_to_cas.csv (no CAS-RN)). No CAS-RN or CHEBI mapping available; curator review needed.
2026-05-11T08:14:56Z mediaingredientmech-agentic-curation LLM REVIEWED_POLYMER_FRACTION UNMAPPED Classified as a single polymer ingredient and left unmapped because the source specifies a molecular-weight dextran fraction while local exact mapping evidence exists only for broader dextran.
2026-08-06T00:00:00+00:00 edison_literature_identity LLM ANNOTATED Edison LITERATURE (PaperQA3) identity research; report at research/ingredients/Dextran_Mw_1270-edison-literature.md (local artifact — research/ is gitignored, so the findings are quoted here rather than linked). Report verdict: **Recommended interpretation:** a **molecular-weight-defined dextran preparation/fraction**, more specifically a low-molar-mass **oligomeric dextran mixture**, rather than a single molecular species, hydrate, salt, buffer, extract, or complete commercial formulation. 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_contextual_parent LLM REVERTED_PARENT_CONTEXT Removed the CHEBI:52071 dextran parent this tool had recorded. The term and its label are correct in the local ChEBI build, but the CURIE appears nowhere in the Edison report the entry cited as evidence — it came from a lookup I ran after reading the report's prose. Keeping it would have credited that lookup to the literature agent, and left two contradicting events one day apart on this record: one saying no CURIE was proposed, one sourcing a CURIE to the same run. Re-proposing it is fine, with its own evidence; see #294.