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Cat. Number:

bs-0366Rs

Quantity size:

1ml

Background:

Fluorescein is a fluorophore commonly used to label proteins - protein-fluorescein conjugates are not usually susceptible to precipitation. In addition to its relatively high absorptivity, excellent fluorescence quantum yield and good water solubility, fluorescein has an excitation maximum of 494 nm that closely matches the 488 nm spectral line of the argon-ion laser, making it an important fluorophore for confocal laser-scanning microscopy and flow cytometry applications. Its fluorescence is pH sensitive and is significantly reduced below pH 7. Fluorescein emits most strongly between 500 and 550 nm, but it has a relatively broad emission spectrum reaching to over 600 nm. Several derivatives of fluorescein are commonly used, including FITC (fluorescein isothiocyanate), carboxylates and succinimidyl esters.

Also known as:

fluorescein isothyocianate; Fluorescein 5-isothiocyanate.

Specificity:

Storage:

10 mM TBS (pH=7.4) with 1% BSA, 0.03% Proclin300 and 50% glycerol. Store at -20℃ for one year. Avoid repeated freeze/thaw cycles.

Application:

Not yet tested in other applications.
Optimal working dilutions must be determined by the end user.

Important Note: This product as supplied is intended for research use only, not for use in human, therapeutic or diagnostic applications.