for the following products
2,5-Dioxopyrrolidin-1-yl 3',6'-dihydroxy-3-oxo-3H-spiro[2-benzofuran-1,9'-xanthene]-5-carboxylate | 5(6)-Carboxyfluorescein-NHS | 5-Carboxyfluorescein N-succinimidyl ester | 5-FAM, SE and 5-Carboxyfluorescein-N-hydroxysuccinimide ester
