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Fluorescein dicaprylate WS1
Fluorescein dicaprylate WS1 is a non-fluorescent water-soluble fluorescein derivative. Esterases hydrolyze the dicaprylate group producing the highly fluorescent product fluorescein. This water-soluble fluorescein dicaprylate may stain Salmonella in green fluorescence. It is a fluorogenic substrate for C8 esterase that generates green fluorescence upon esterase cleavage. Compared to the fluorescein dicaprylate esterase substrate, this fluorescein dicaprylate WS1 is much more water-soluble while fluorescein dicaprylate precipitates in aqueous solutions, making it hard to be used in continuous assays.
Chemical structure for Fluorescein dicaprylate WS1
Chemical structure for Fluorescein dicaprylate WS1
CatalogSize
Price
Quantity
220185 mg
Price
 
Physical properties

Molecular weight828.97
SolventDMSO
Spectral properties

Absorbance (nm)487
Correction factor (260 nm)0.32
Correction factor (280 nm)0.35
Extinction coefficient (cm -1 M -1)
80000
1
Excitation (nm)498
Emission (nm)517
Quantum yield
0.7900
1
0.95
2
Storage, safety and handling

H-phraseH303, H313, H333
Hazard symbolXN
Intended useResearch Use Only (RUO)
R-phraseR20, R21, R22
StorageFreeze (< -15 °C); Minimize light exposure
UNSPSC12352200
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Page updated on October 13, 2025