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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:1294 term browser browse the term
Definition:An oxysterol that is cholesterol substituted by hydroxy groups at positions 20 and 22 (the 20R,22R-stereoisomer).
Synonyms:exact_synonym: (22R)-cholest-5-ene-3beta,20,22-triol
 related_synonym: (22R)-20alpha,22-Dihydroxycholesterol;   20,22-Dihydroxycholesterol;   20alpha,22R-Dihydroxycholesterol;   20alpha,22beta-Dihydroxycholesterol;   Formula=C27H46O3;   InChI=1S/C27H46O3/c1-17(2)6-11-24(29)27(5,30)23-10-9-21-20-8-7-18-16-19(28)12-14-25(18,3)22(20)13-15-26(21,23)4/h7,17,19-24,28-30H,6,8-16H2,1-5H3/t19-,20-,21-,22-,23-,24+,25-,26-,27+/m0/s1;   InChIKey=ISBSSBGEYIBVTO-TYKWNDPBSA-N;   SMILES=[H][C@@]12CC=C3C[C@@H](O)CC[C@]3(C)[C@@]1([H])CC[C@@]1(C)[C@@]2([H])CC[C@]1([H])[C@@](C)(O)[C@H](O)CCC(C)C
 xref: Beilstein:2339391;   CAS:596-94-1;   HMDB:HMDB0006763;   KEGG:C05501;   LIPID_MAPS_instance:LMST01010200;   MetaCyc:20A-20B-DIHYDROXY-CHOLESTEROL;   Reaxys:2339391

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  CHEBI ontology 19816
    chemical entity 19816
      molecular entity 19814
        polyatomic entity 19727
          heteroatomic molecular entity 19653
            hydroxides 19107
              organic hydroxy compound 18661
                hydroxy steroid 12380
                  20-hydroxy steroid 45
                    (20R,22R)-20,22-dihydroxycholesterol 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19816
    subatomic particle 19814
      composite particle 19814
        hadron 19814
          baryon 19814
            nucleon 19814
              atomic nucleus 19814
                atom 19814
                  main group element atom 19702
                    p-block element atom 19702
                      carbon group element atom 19608
                        carbon atom 19597
                          organic molecular entity 19597
                            organic molecule 19522
                              organic cyclic compound 19320
                                organic polycyclic compound 16395
                                  steroid 12800
                                    hydroxy steroid 12380
                                      3-hydroxy steroid 10008
                                        3beta-hydroxy steroid 1992
                                          3beta-hydroxy-Delta(5)-steroid 1838
                                            cholesterol 318
                                              oxysterol 91
                                                (20R,22R)-20,22-dihydroxycholesterol 0
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.