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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 19785
    role 19732
      application 19391
        tracer 1566
          5(6)-carboxyfluorescein 0
Path 2
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  CHEBI ontology 19785
    subatomic particle 19782
      composite particle 19782
        hadron 19782
          baryon 19782
            nucleon 19782
              atomic nucleus 19782
                atom 19782
                  main group element atom 19670
                    p-block element atom 19670
                      carbon group element atom 19572
                        carbon atom 19561
                          organic molecular entity 19561
                            organic group 18493
                              organic divalent group 18486
                                organodiyl group 18486
                                  carbonyl group 18389
                                    carbonyl compound 18389
                                      carboxylic ester 14073
                                        lactone 5978
                                          gamma-lactone 1214
                                            fluorescein 67
                                              6-carboxyfluorescein 4
                                                5(6)-carboxyfluorescein 0
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