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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:138465 term browser browse the term
Definition:A commercially available mixture of 5-carboxyfluorescein and 6-carboxyfluorescein isomers. A fluorescent dye, it is commonly used as a tracer agent.
Synonyms:related_synonym: 5(6)-FAM;   5-(and-6)-FAM;   5-(and-6)-carboxyfluorescein;   Formula=C42H24O14;   InChI=1S/2C21H12O7/c22-11-2-5-15-17(8-11)27-18-9-12(23)3-6-16(18)21(15)14-4-1-10(19(24)25)7-13(14)20(26)28-21;22-11-2-5-14-17(8-11)27-18-9-12(23)3-6-15(18)21(14)16-7-10(19(24)25)1-4-13(16)20(26)28-21/h2*1-9,22-23H,(H,24,25);   InChIKey=BPVHBBXCESDRKW-UHFFFAOYSA-N;   SMILES=OC1=CC=C2C3(OC(C4=C3C=C(C=C4)C(O)=O)=O)C=5C(OC2=C1)=CC(=CC5)O.OC1=CC=C2C3(OC(C4=C3C=CC(=C4)C(O)=O)=O)C=5C(OC2=C1)=CC(=CC5)O

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  CHEBI ontology 19876
    role 19851
      application 19687
        tracer 7355
          5(6)-carboxyfluorescein 0
Path 2
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  CHEBI ontology 19876
    subatomic particle 19874
      composite particle 19874
        hadron 19874
          baryon 19874
            nucleon 19874
              atomic nucleus 19905
                atom 19905
                  main group element atom 19821
                    p-block element atom 19821
                      carbon group element atom 19768
                        carbon atom 19764
                          organic molecular entity 19764
                            organic group 18962
                              organic divalent group 18943
                                organodiyl group 18915
                                  carbonyl group 18869
                                    carbonyl compound 18869
                                      carboxylic acid 18618
                                        aromatic carboxylic acid 12023
                                          benzoic acids 11998
                                            fluorescein (acid form) 70
                                              fluorescein (lactone form) 69
                                                6-carboxyfluorescein 4
                                                  5(6)-carboxyfluorescein 0
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