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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:137037 term browser browse the term
Definition:An androstanoid that is 5alpha-dihydrotestosterone carrying an additional hydroxy susbstituent at position 18.
Synonyms:related_synonym: (5alpha,17beta)-17,18-dihydroxyandrostan-3-one;   17beta,18-dihydroxy-3-oxo-5alpha-androstanone;   17beta,18-dihydroxy-5alpha-androstan-3-one;   18-hydroxydihydrotestosterone;   Formula=C19H30O3;   InChI=1S/C19H30O3/c1-18-8-6-13(21)10-12(18)2-3-14-15(18)7-9-19(11-20)16(14)4-5-17(19)22/h12,14-17,20,22H,2-11H2,1H3/t12-,14+,15-,16-,17-,18-,19+/m0/s1;   InChIKey=JZIBJMFPRNIDRR-SGDLSELDSA-N;   SMILES=C1[C@@]2([C@]3(CC[C@]4([C@]([C@@]3(CC[C@]2(CC(C1)=O)[H])[H])(CC[C@@H]4O)[H])CO)[H])C
 xref: PMID:22773874;   Reaxys:7352931

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Path 1
Term Annotations click to browse term
  CHEBI ontology 24359
    role 24266
      biological role 24233
        molecular messenger 19130
          hormone 18652
            sex hormone 18490
              androgen 4036
                17beta-hydroxy-5alpha-androstan-3-one 1036
                  18-hydroxy-5alpha-dihydrotestosterone 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 24359
    subatomic particle 24315
      composite particle 24315
        hadron 24315
          baryon 24315
            nucleon 24315
              atomic nucleus 24315
                atom 24315
                  main group element atom 24160
                    p-block element atom 24160
                      carbon group element atom 23936
                        carbon atom 23892
                          organic molecular entity 23892
                            organic group 22174
                              organic divalent group 22148
                                organodiyl group 22148
                                  carbonyl group 22127
                                    carbonyl compound 22127
                                      ketone 18307
                                        oxo steroid 9785
                                          3-oxo steroid 9317
                                            3-oxo-5alpha-steroid 1047
                                              17beta-hydroxy-5alpha-androstan-3-one 1036
                                                18-hydroxy-5alpha-dihydrotestosterone 0
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.