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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 19773
    role 19719
      application 19403
        fuel 10847
          methanol 3106
            methyl ester 3073
              carpronium 0
                carpronium chloride 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19773
    subatomic particle 19772
      composite particle 19772
        hadron 19772
          baryon 19772
            nucleon 19772
              atomic nucleus 19772
                atom 19772
                  main group element atom 19662
                    main group molecular entity 19662
                      s-block molecular entity 19426
                        hydrogen molecular entity 19420
                          hydrides 18753
                            inorganic hydride 17457
                              pnictogen hydride 17433
                                nitrogen hydride 17280
                                  ammonium 8224
                                    ammonium ion derivative 8220
                                      quaternary ammonium ion 5111
                                        4-(trimethylammonio)butanoic acid 0
                                          carpronium 0
                                            carpronium chloride 0
paths to the root