5(6)-Carboxyfluorescein N-hydroxysuccinimide ester ≥98% (by TLC)

Supplier: Biotium

Synonyms: 5(6)-FAM SENHS-Fluorescein5(6)-Carboxyfluorescein N-hydroxysuccinimide esterFLUOS

90024.EA 158 EUR
90024.
5(6)-Carboxyfluorescein N-hydroxysuccinimide ester ≥98% (by TLC)
5(6)-Carboxyfluorescein N-hydroxysuccinimide ester

5(6)-FAM SE (full name: 5-(and-6)-Carboxyfluorescein, succinimidyl ester mixed isomers) is an amine-reactive green fluorescent dye widely used for labeling proteins or other molecules that contain a primary or secondary aliphatic amine. The coupling reaction is usually carried out at pH 8-9.5. The amide linkage from the coupling reaction is much more stable than the thiourea linkage formed from the coupling of an amine and an isothiocyanate.


  • λEx/λEm = 495/519 nm
  • Yellow solid soluble in DMSO or DMF
  • Store at -20°C and protect from light

Formula: C₂₅H₁₅NO₉
Storage Temperature: Freezer
MDL Number: MFCD04119713
CAS Number: 117548-22-8

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