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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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  CHEBI ontology 0
    role 0
      biological role 0
        molecular messenger 0
          hormone 0
            sex hormone 0
              androgen 0
                17beta-hydroxy-5alpha-androstan-3-one 0
                  18-hydroxy-5alpha-dihydrotestosterone 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
                                      ketone 0
                                        oxo steroid 0
                                          3-oxo steroid 0
                                            3-oxo-5alpha-steroid 0
                                              17beta-hydroxy-5alpha-androstan-3-one 0
                                                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.