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The Chemical Entities of Biological Interest (ChEBI) ontology is downloaded weekly from EMBL-EBI at The data is made available under the Creative Commons License (CC BY 3.0, For more information see: Degtyarenko et al. (2008) ChEBI: a database and ontology for chemical entities of biological interest. Nucleic Acids Res. 36, D344–D350.

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Accession:CHEBI:271685 term browser browse the term
Definition:A quarternary ammonium cation having one ethyl and three methyl substituents around the central nitrogen.
Synonyms:exact_synonym: N,N,N-trimethylethanaminium
 related_synonym: Formula=C5H14N;   InChI=1S/C5H14N/c1-5-6(2,3)4/h5H2,1-4H3/q+1;   InChIKey=YOMFVLRTMZWACQ-UHFFFAOYSA-N;   SMILES=CC[N+](C)(C)C;   TMEA;   Trimethylethylammonium;   ethyltrimethylammonium cation;   ethyltrimethylammonium ion
 xref: Beilstein:1733271;   CAS:15302-88-2;   PMID:15149650

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  CHEBI ontology 397
    chemical entity 397
      molecular entity 397
        ion 26
          organic ion 18
            organic cation 11
              quaternary ammonium ion 5
                ethyltrimethylammonium 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 397
    subatomic particle 397
      composite particle 397
        hadron 397
          baryon 397
            nucleon 397
              atomic nucleus 397
                atom 397
                  main group element atom 390
                    main group molecular entity 390
                      s-block molecular entity 335
                        hydrogen molecular entity 334
                          hydrides 273
                            inorganic hydride 237
                              pnictogen hydride 236
                                nitrogen hydride 236
                                  ammonium 5
                                    ammonium ion derivative 5
                                      quaternary ammonium ion 5
                                        ethyltrimethylammonium 0
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