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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:133216 term browser browse the term
Definition:A brassinosteroid that is castasterone carrying an additional hydroxy substituent at position 26.
Synonyms:exact_synonym: (22R,23R)-2alpha,3alpha,22,23,26-pentahydroxy-5alpha-campestan-6-one
 related_synonym: (2alpha,3alpha,5alpha,22R,23R,24S)-2,3,22,23,26-pentahydroxyergostan-6-one;   Formula=C28H48O6;   InChI=1S/C28H48O6/c1-14(13-29)15(2)25(33)26(34)16(3)18-6-7-19-17-10-22(30)21-11-23(31)24(32)12-28(21,5)20(17)8-9-27(18,19)4/h14-21,23-26,29,31-34H,6-13H2,1-5H3/t14?,15-,16-,17-,18+,19-,20-,21+,23-,24+,25+,26+,27+,28+/m0/s1;   InChIKey=GIHKVCBPOTYEGP-ZHTUDUEMSA-N;   SMILES=C1[C@]2([C@]3([C@@]([C@@]4([C@](C[C@@H]([C@@H](C4)O)O)(C(C3)=O)[H])C)(CC[C@@]2([C@](C1)([C@@H]([C@H]([C@@H]([C@H](C(CO)C)C)O)O)C)[H])C)[H])[H])[H]
 xref: KEGG:C19873;   MetaCyc:CPD-12500;   PMID:14605216;   PMID:16872648;   Reaxys:11179367

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Path 1
Term Annotations click to browse term
  CHEBI ontology 20089
    role 20042
      biological role 20011
        growth regulator 8533
          plant growth regulator 8513
            plant growth stimulator 16
              castasterone 0
                26-hydroxycastasterone 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 20089
    subatomic particle 20058
      composite particle 20058
        hadron 20088
          baryon 20088
            nucleon 20088
              atomic nucleus 20088
                atom 20058
                  main group element atom 19960
                    p-block element atom 19990
                      carbon group element atom 19916
                        carbon atom 19909
                          organic molecular entity 19909
                            organic group 18988
                              organic divalent group 18950
                                organodiyl group 18974
                                  carbonyl group 18903
                                    carbonyl compound 18925
                                      ketone 17115
                                        oxo steroid 10321
                                          6-oxo steroid 23
                                            castasterone 0
                                              26-hydroxycastasterone 0
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