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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.

Term:leucopterin (enol form)
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Accession:CHEBI:178109 term browser browse the term
Definition:A member of the class of pteridines that is pteridine substituted by an amino group at position 2 and hydroxy groups at positions 4, 6 and 7.
Synonyms:exact_synonym: 2-aminopteridine-4,6,7-triol
 related_synonym: 2-amino-4,6,7-trihydroxypteridine;   2-amino-4,6,7-trihydroxypyrimido[4,5-b]pyrazine;   Formula=C6H5N5O3;   InChI=1S/C6H5N5O3/c7-6-10-2-1(3(12)11-6)8-4(13)5(14)9-2/h(H,8,13)(H4,7,9,10,11,12,14);   InChIKey=SFLOGVVDXPCWGR-UHFFFAOYSA-N;   SMILES=NC1=NC2=C(N=C(O)C(O)=N2)C(O)=N1;   leikopterin;   leucopterin;   leukopterin
 xref: CAS:492-11-5;   PMID:8857673
 cyclic_relationship: is_tautomer_of CHEBI:178010

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  CHEBI ontology 19751
    role 19724
      biological role 19722
        biophysical role 13796
          biological pigment 1101
            leucopterin (enol form) 0
Path 2
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  CHEBI ontology 19751
    subatomic particle 19749
      composite particle 19749
        hadron 19749
          baryon 19749
            nucleon 19749
              atomic nucleus 19749
                atom 19749
                  main group element atom 19698
                    p-block element atom 19698
                      carbon group element atom 19644
                        carbon atom 19640
                          organic molecular entity 19640
                            organic molecule 19602
                              organic cyclic compound 19412
                                organic heterocyclic compound 18771
                                  organic heteropolycyclic compound 18259
                                    organic heterobicyclic compound 17228
                                      pteridines 10226
                                        leucopterin (enol form) 0
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