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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 21746
    chemical entity 21744
      molecular entity 21731
        ion 16630
          organic ion 8633
            organic cation 7456
              quaternary ammonium ion 5255
                ethyltrimethylammonium 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 21746
    subatomic particle 21732
      composite particle 21732
        hadron 21732
          baryon 21732
            nucleon 21732
              atomic nucleus 21732
                atom 21732
                  main group element atom 21647
                    main group molecular entity 21647
                      s-block molecular entity 21180
                        hydrogen molecular entity 21117
                          hydrides 20363
                            inorganic hydride 18055
                              pnictogen hydride 18018
                                nitrogen hydride 17837
                                  ammonium 8100
                                    ammonium ion derivative 8096
                                      quaternary ammonium ion 5255
                                        ethyltrimethylammonium 0
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