lactone fluorescein 0 3',6'-dihydroxy-3H-spiro[2-benzofuran-1,9'-xanthen]-3-one 3',6'-dihydroxyfluoran 3,6-fluorandiol 332.068 332.307 9-(o-carboxyphenyl)-6-hydroxy-3-isoxanthenone 9-(o-carboxyphenyl)-6-hydroxy-3H-xanthen-3-one A xanthene dye that is highly fluorescent, detectable even when present in minute quantities. Used forensically to detect traces of blood, in analytical chemistry as an indicator in silver nitrate titrations and in microscopy. Beilstein:94324 C.I. 45350 C.I. Solvent Yellow 94 C20H12O5 CAS:2321-07-5 CHEBI:31624 CHEBI:606590 D and C Yellow No. 7 D&C Yellow No. 7 DrugBank:DB00693 Fluoreszein GNBHRKFJIUUOQI-UHFFFAOYSA-N Gmelin:248626 HMDB:HMDB14831 InChI=1S/C20H12O5/c21-11-5-7-15-17(9-11)24-18-10-12(22)6-8-16(18)20(15)14-4-2-1-3-13(14)19(23)25-20/h1-10,21-22H Japan Yellow 201 KEGG:D01261 OC1=CC=C2C3(OC(C4=C3C=CC=C4)=O)C=5C(OC2=C1)=CC(=CC5)O PDB:4FAB PMID:1517825 PMID:15465055 PMID:16195545 PMID:20371259 PMID:2508085 PMID:26756394 PMID:7868912 Reaxys:94324 Solvent Yellow 94 Wikipedia:Fluorescein Yellow fluorescein chebi.owl chebi_ontology fluoresceine obi.owl resorcinolphthalein polycyclic compound phenols benzofurans organic heteropentacyclic compound xanthenes