FSD Fluor™ 488 NHS ester

Catalog No. KOSC1002


Lead time
1 mg $175.00
5 mg $615.00
25 mg $2,150.00
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FSD Fluor™ 488 NHS ester is the new generation of amine reactive bright green dye developed by BioActs’ cutting-edge technology displaying excellent optical property comparing to spectrally similar dyes. The fluorescence intensity after binding to biomolecules such as antibody, nucleotide, and protein is also excellent, thus FSD Fluor™ series is ideal for various biochemical and biological analytical applications. FSD dye is conceivably the best existent dye for single-molecular detection of bioconjugates for fluorescence correlation spectroscopy and for fluorescence polarization measurements.The maxima of Ex/Em values are at 495/519 nm, similar to that of Fluorescein. FSD 488 might be excited using 488 nm laser line and displays excellent optical property. FSD 488 can be conjugated to low-abundance biomolecules with great sensitivity and high molar ratios, allowing sensitive detection. NHS esters readily react with amine-modified oligonucleotides or amino groups of proteins, i.e. the ε-amino groups of lysine or the amine terminus of nucleotides to form a chemically stable amide bond between dye and the biomolecule. We offer FSD Fluor™ 488 NHS ester for labeling of antibodies, peptides, proteins, ligands, and amplification substrates optimized for cellular labeling and detection. 


Fluorophore: FSD Fluor™ 488

Reactive group: NHS ester

Excitation/Emission Max.(nm): 495/519

Spectrally similar dyes: Alexa 488, FITC, Cy2, Flamma®496

Extinction coefficient: ≥ 64,000 cm-1M-1

CF280: 0.11

Appearance: Orange Solid

Molecular Weight: 633.56 g/mol

Solubility: DMF

Storage conditions: -20 ℃, protect from light

Citation & Reference

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