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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:15960 term browser browse the term
Definition:A quaternary ammonium ion that has formula C9H18NO4.
Synonyms:exact_synonym: (2R)-2-(acetyloxy)-3-carboxy-N,N,N-trimethylpropan-1-aminium
 related_synonym: Formula=C9H18NO4;   InChI=1S/C9H17NO4/c1-7(11)14-8(5-9(12)13)6-10(2,3)4/h8H,5-6H2,1-4H3/p+1/t8-/m1/s1;   InChIKey=RDHQFKQIGNGIED-MRVPVSSYSA-O;   O-Acetyl-L-carnitine;   O-Acetylcarnitine;   SMILES=CC(=O)O[C@H](CC(O)=O)C[N+](C)(C)C
 alt_id: CHEBI:12711;   CHEBI:21936;   CHEBI:7669
 xref: KEGG:C02571
 cyclic_relationship: is_conjugate_acid_of CHEBI:73024

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  CHEBI ontology 0
    chemical entity 0
      molecular entity 0
        ion 0
          organic ion 0
            organic cation 0
              quaternary ammonium ion 0
                O-acetylcarnitinium 0
Path 2
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  CHEBI ontology 0
    subatomic particle 0
      composite particle 0
        hadron 0
          baryon 0
            nucleon 0
              atomic nucleus 0
                atom 0
                  main group element atom 0
                    p-block element atom 0
                      carbon group element atom 0
                        carbon atom 0
                          organic molecular entity 0
                            organic group 0
                              organic divalent group 0
                                organodiyl group 0
                                  carbonyl group 0
                                    carbonyl compound 0
                                      carboxylic acid 0
                                        monocarboxylic acid 0
                                          fatty acid 0
                                            short-chain fatty acid 0
                                              fatty acid 4:0 0
                                                butyric acid 0
                                                  gamma-amino-beta-hydroxybutyric acid 0
                                                    carnitinium 0
                                                      (R)-carnitinium 0
                                                        O-acetylcarnitinium 0
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