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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:19566 term browser browse the term
Definition:A 3beta-hydroxy steroid that is 5beta-cholestane containing a double bond between positions 7 and 8, and substituted by an oxo group at position 6 and by hydroxy groups at the 3beta, 14alpha, 22 pro-R and 25 positions.
Synonyms:exact_synonym: (22R)-3beta,14,22,25-tetrahydroxy-5beta-cholest-7-en-6-one
 related_synonym: 2-Deoxy-alpha-ecdysone;   Formula=C27H44O5;   InChI=1S/C27H44O5/c1-16(22(29)9-10-24(2,3)31)18-8-13-27(32)20-15-23(30)21-14-17(28)6-11-25(21,4)19(20)7-12-26(18,27)5/h15-19,21-22,28-29,31-32H,6-14H2,1-5H3/t16-,17-,18+,19-,21-,22+,25+,26+,27+/m0/s1;   InChIKey=CRAPXAGGASWTPU-VQOIUDCISA-N;   SMILES=[H][C@@]1(CC[C@@]2(O)C3=CC(=O)[C@]4([H])C[C@@H](O)CC[C@]4(C)[C@@]3([H])CC[C@]12C)[C@H](C)[C@H](O)CCC(C)(C)O
 xref: CAS:31575-91-4;   KEGG:C16495;   Reaxys:5311326
 cyclic_relationship: is_conjugate_acid_of CHEBI:147386

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Path 1
Term Annotations click to browse term
  CHEBI ontology 19816
    role 19764
      biological role 19764
        prohormone 6
          ecdysone 6
            2-deoxyecdysone 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
                                        sterol 418
                                          3beta-sterol 412
                                            ecdysone 6
                                              2-deoxyecdysone 0
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RGD is funded by grant HL64541 from the National Heart, Lung, and Blood Institute on behalf of the NIH.