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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:132358 term browser browse the term
Definition:A C19-steroid that is testosterone carrying an additional hydroxy substituent at the 1alpha-position
Synonyms:exact_synonym: 1alpha,17beta-dihydroxyandrost-4-en-3-one
 related_synonym: (1alpha,17beta)-1,17-dihydroxyandrost-4-en-3-one;   Formula=C19H28O3;   InChI=1S/C19H28O3/c1-18-8-7-15-13(14(18)5-6-16(18)21)4-3-11-9-12(20)10-17(22)19(11,15)2/h9,13-17,21-22H,3-8,10H2,1-2H3/t13-,14-,15-,16-,17-,18-,19-/m0/s1;   InChIKey=LUWKGSHFDJJDAJ-LOVVWNRFSA-N;   SMILES=C1C2=CC(C[C@@H]([C@@]2([C@]3(CC[C@]4([C@]([C@@]3(C1)[H])(CC[C@@H]4O)[H])C)[H])C)O)=O
 xref: KEGG:C21296;   MetaCyc:CPD-18923;   PMID:26478560;   PMID:7900169;   Reaxys:2625800

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19770
    chemical entity 19769
      group 19678
        organic group 18488
          3-oxo-Delta(4)-steroid group 7930
            3-oxo-Delta(4) steroid 7930
              testosterone 2843
                1alpha-hydroxytestosterone 0
Path 2
Term Annotations click to browse term
  CHEBI ontology 19770
    subatomic particle 19768
      composite particle 19768
        hadron 19768
          baryon 19768
            nucleon 19768
              atomic nucleus 19768
                atom 19768
                  main group element atom 19655
                    p-block element atom 19655
                      carbon group element atom 19550
                        carbon atom 19539
                          organic molecular entity 19539
                            organic group 18488
                              organic divalent group 18481
                                organodiyl group 18481
                                  carbonyl group 18384
                                    carbonyl compound 18384
                                      ketone 16135
                                        oxo steroid 9274
                                          3-oxo steroid 8802
                                            3-oxo-Delta(4) steroid 7930
                                              testosterone 2843
                                                1alpha-hydroxytestosterone 0
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.