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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.

Term:3-hydroxyisobutyric acid
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Accession:CHEBI:18064 term browser browse the term
Definition:A 4-carbon, branched hydroxy fatty acid and intermediate in the metabolism of valine.
Synonyms:exact_synonym: 3-hydroxy-2-methylpropanoic acid
 related_synonym: 2-methyl-3-hydroxypropanoic acid;   Formula=C4H8O3;   HIBA;   InChI=1S/C4H8O3/c1-3(2-5)4(6)7/h3,5H,2H2,1H3,(H,6,7);   InChIKey=DBXBTMSZEOQQDU-UHFFFAOYSA-N;   SMILES=CC(CO)C(O)=O
 alt_id: CHEBI:1516
 xref: Beilstein:1745484;   CAS:2068-83-9;   KEGG:C01188
 cyclic_relationship: is_conjugate_acid_of CHEBI:11805

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Term paths to the root
Path 1
Term Annotations click to browse term
  CHEBI ontology 19785
    role 19732
      application 19391
        pharmaceutical 19272
          drug 19272
            antifungal drug 5137
              propionic acid 3665
                3-hydroxyisobutyric acid 0
                  (S)-3-hydroxyisobutyric acid + 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19785
    subatomic particle 19782
      composite particle 19782
        hadron 19782
          baryon 19782
            nucleon 19782
              atomic nucleus 19782
                atom 19782
                  main group element atom 19670
                    p-block element atom 19670
                      carbon group element atom 19572
                        carbon atom 19561
                          organic molecular entity 19561
                            organic group 18493
                              organic divalent group 18486
                                organodiyl group 18486
                                  carbonyl group 18389
                                    carbonyl compound 18389
                                      carboxylic acid 18060
                                        monocarboxylic acid 17406
                                          fatty acid 15844
                                            saturated fatty acid 15811
                                              propionic acid 3665
                                                3-hydroxyisobutyric acid 0
                                                  (S)-3-hydroxyisobutyric acid + 0
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