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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:145653 term browser browse the term
Definition:A methyl ester resulting from the formal condensation of the carboxy group of 4-(trimethylammonio)butanoic acid with methanol.
Synonyms:exact_synonym: 4-methoxy-N,N,N-trimethyl-4-oxobutan-1-aminium
 related_synonym: Formula=C8H18NO2;   InChI=1S/C8H18NO2/c1-9(2,3)7-5-6-8(10)11-4/h5-7H2,1-4H3/q+1;   InChIKey=XQSLKIBWQSTAGK-UHFFFAOYSA-N;   SMILES=C([N+](C)(C)C)CCC(=O)OC;   carpronium cation;   carpronium ion
 xref: CAS:14075-13-9;   Drug_Central:519;   PMID:6745806

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19781
    role 19726
      application 19412
        fuel 10847
          methanol 3110
            methyl ester 3077
              carpronium 0
                carpronium chloride 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19781
    subatomic particle 19779
      composite particle 19779
        hadron 19779
          baryon 19779
            nucleon 19779
              atomic nucleus 19779
                atom 19779
                  main group element atom 19669
                    main group molecular entity 19669
                      s-block molecular entity 19434
                        hydrogen molecular entity 19429
                          hydrides 18757
                            inorganic hydride 17455
                              pnictogen hydride 17431
                                nitrogen hydride 17278
                                  ammonium 8223
                                    ammonium ion derivative 8219
                                      quaternary ammonium ion 5109
                                        4-(trimethylammonio)butanoic acid 0
                                          carpronium 0
                                            carpronium chloride 0
paths to the root