1-ethyl-3-methylimidazolium acetate

Ontology mapping

Primary identifier: cas:143314-17-4
Ontology term: CHEBI:63895 — ionic liquid
Ontology label: ionic liquid

Rejected enrichment labels (2)

Provenance-only candidates: these are not synonyms and do not resolve to this record.

Rejected label	Disposition	Source	Occurrences
1-ethyl-3-methyl-1H-imidazol-3-ium	REJECTED_LABEL	chebi_synonym_review
1-ethyl-3-methylimidazolium lysine	REJECTED_LABEL	mappings/ingredient_mappings.sssom.tsv

Chemical properties

Cas rn: 143314-17-4
Data source: CultureBotHT compounds_to_cas.csv
Retrieval date: 2026-04-29T06:51:33.117170+00:00
Molecular formula: C8H14N2O2
Smiles: CCN1C=C[N+](=C1)C.CC(=O)[O-]
Inchi: InChI=1S/C6H11N2.C2H4O2/c1-3-8-5-4-7(2)6-8;1-2(3)4/h4-6H,3H2,1-2H3;1H3,(H,3,4)/q+1;/p-1
Pubchem cid: 11658353

Evidence (3)

DATABASE_MATCH via CultureBotHT

Imported from CultureBotHT. CAS-RN 143314-17-4 present, but no CHEBI entry exists (checked OAK CHEBI sqlite + PubChem CID synonyms). FEBA/Hans80 panels: FEBA_stress. Curator can promote to a CHEBI primary if/when CHEBI adds the term.

DATABASE_MATCH via CHEBI via OLS (stem-substring)

SUPERSEDED (#312): Parent class identified via stem-substring; matched_via='1-ethyl-3-methylimidazolium acetate'

MANUAL_CURATION via MIM curation (#312); chebi.db

parent CHEBI:61326 ('1-ethyl-3-methylimidazolium') -> CHEBI:63895 ('ionic liquid'). The record is the neutral salt (CAS 143314-17-4, two-fragment SMILES). CHEBI:61326 '1-ethyl-3-methylimidazolium' is the bare cation, C6H11N2 charge +1: a component of the salt, not a broader term for it (Section 6). ChEBI has no term for the acetate salt, so the closest broader class is CHEBI:63895 'ionic liquid', the parent the sibling record 1-ethyl-3-methylimidazolium_Lysine already uses. cas: identity, NARROW_MATCH grade and both registry rows unchanged (Section 3 step 2).

Occurrence statistics

Total occurrences: 0
Distinct media: 0

Curation history

Timestamp	Curator	Action	New status	Changes
2026-04-29T06:51:33.117170+00:00	audit_add_remaining_culturebotht	CREATED_FROM_CAS_FALLBACK	MAPPED	Created with cas:143314-17-4 as primary identifier; no CHEBI entry exists for this compound.
2026-05-01T07:35:31.659196+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (cas: primary (defined chemical))
2026-05-02T02:51:03.001057+00:00	auto_classify_ingredient_type	AUTO_BACKFILL_PUBCHEM_CHEMISTRY		molecular_formula=C8H14N2O2; smiles=CCN1C=C[N+](=C1)C.CC(=O)[O-]; inchi=InChI=1S/C6H11N2.C2H4O2/c1-3-8-5-4-7(2)6-8;1-2(3)4
2026-05-02T03:12:11.759811+00:00	auto_classify_ingredient_type	AUTO_CLASSIFY_INGREDIENT_TYPE		set ingredient_type=SINGLE_INGREDIENT (chemical structure populated (molecular_formula))
2026-05-02T04:35:53.785633+00:00	backfill_parent_terms	BACKFILL_PARENT_CHEBI		set ontology_mapping parent=CHEBI:61326 (stem-substring)
2026-09-11T06:31:23.789310+00:00	fix_salt_ion_identity_overclaims	REJECTED_ION_SYNONYMS		Marked cation/other-salt synonym(s) as REJECTED_LABEL so they cannot leak through SSSOM `other`: '1-ethyl-3-methyl-1H-imidazol-3-ium', '1-ethyl-3-methylimidazolium lysine' (#315).
2026-09-22T23:25:51.013985+00:00	claude LLM	REGROUNDED_PARENT_TERM	MAPPED	broadMatch parent CHEBI:61326 ('1-ethyl-3-methylimidazolium') -> CHEBI:63895 ('ionic liquid') (#312). The record is the neutral salt (CAS 143314-17-4, two-fragment SMILES). CHEBI:61326 '1-ethyl-3-methylimidazolium' is the bare cation, C6H11N2 charge +1: a component of the salt, not a broader term for it (Section 6). ChEBI has no term for the acetate salt, so the closest broader class is CHEBI:63895 'ionic liquid', the parent the sibling record 1-ethyl-3-methylimidazolium_Lysine already uses. cas: identity, NARROW_MATCH grade and both registry rows unchanged (Section 3 step 2).

Knowledge gaps & discussions (1)

KNOWLEDGE_GAPOPEN Knowledge gap for 1-ethyl-3-methylimidazolium acetate: Ionic liquids (ILs) have been used to replace organic solvents, thereby causing challenges for wastewater treatment.

Surfaced by the Europe PMC literature gap-signal scan (categories: future_work, limitations_barriers, unclear_unknown). Curator review required: set attaches_to, refine the prompt, and weigh the cited evidence.

4 evidence item(s)

abstractNO_EVIDENCEPMID:41015306

Ionic liquids (ILs) have been used to replace organic solvents, thereby causing challenges for wastewater treatment.

Gap-signal sentence (limitations_barriers) from the cited abstract.

abstractNO_EVIDENCEPMID:40666722

By focusing on the deconstruction and reassembly of nonedible agro-wastes, these methods address critical challenges such as resource competition, plastic pollution, and greenhouse gas emissions.

Gap-signal sentence (limitations_barriers) from the cited abstract.

abstractNO_EVIDENCEPMID:42195639

These inherent structural complexities present significant challenges for its efficient isolation and precise transformation.

Gap-signal sentence (limitations_barriers) from the cited abstract.

abstractNO_EVIDENCEPMID:40649189

However, challenges related to large-scale production, functionalization, regulatory frameworks, and safety concerns persist, necessitating further research and innovation.

Gap-signal sentence (future_work, limitations_barriers) from the cited abstract.