1) Cat. No.: TRC-C178315; 2) Chemical Name: 5(6)-Carboxyfluorescein; 3) CAS No.: 72088-94-9; 4) Mol. Formula: C21H12O7; 5) Mol. Weight: 376.32; 6) Packing Size: 5g / 50g; 7) Appearence: Dark-Orange to Brown Solid; 8) Application Notes: A useful reagent for the preparation of hydrolytically stable fluorescent conjugates and is a useful starting material for the synthesis of other fluorescein-derives reagent.; 9) Synonym: 3',6'-Dihydroxy-3-oxo-spiro[isobenzofuran-1(3H),9'-[9H]xanthene]-ar-carboxylic Acid; Fluoresceincarboxylic Acid; ; 10) Solubility: Acetone, Dichloromethane, Methanol; 11) Storage condition: -20°C Freezer; 12) References: Theisen, P., et al.: Tetrahedron Lett., 33, 5033 (1992), Mattingly, P.: Bioconjgate Chem., 3, 430 (1992, Bertrand, R., et al.: Biochemistry, 34, 9500 (1995)