Fluorescein-6-isothiocyanate

• CAT Number: R001179
• CAS Number: 18861-78-4
• Molecular Formula: C21H11NO5S
• Molecular Weight: 389.38
• Purity: ≥95%
• Synonyms: 3′,6′-dihydroxy-5-isothiocyanatospiro[2-benzofuran-3,9′-xanthene]-1-one
• IUPAC Name: 3',6'-dihydroxy-5-isothiocyanatospiro[2-benzofuran-3,9'-xanthene]-1-one
• InChI: InChI=1S/C21H11NO5S/c23-12-2-5-15-18(8-12)26-19-9-13(24)3-6-16(19)21(15)17-7-11(22-10-28)1-4-14(17)20(25)27-21/h1-9,23-24H
• InChIKey: GTQFZXYECNSNNC-UHFFFAOYSA-N
• SMILES: C1=CC2=C(C=C1N=C=S)C3(C4=C(C=C(C=C4)O)OC5=C3C=CC(=C5)O)OC2=O

Fluorescein-6-isothiocyanate (Cat No.:R001179) is a fluorescent dye commonly used in biological and biochemical research. It contains a fluorescein moiety, which emits green fluorescence when excited by ultraviolet or blue light, making it ideal for labeling and visualizing proteins, antibodies, and other biomolecules in microscopy and flow cytometry applications. The isothiocyanate group allows FITC to form covalent bonds with primary amines on proteins or other molecules, facilitating targeted labeling. FITC is widely employed in immunoassays, cell imaging, and studies involving molecular interactions and cellular processes.