Invitrogen™ IAEDANS (1,5-IAEDANS, 5-((((2-Iodoacetyl)amino)ethyl)amino)Naphthalene-1-Sulfonic Acid)
On demandInvitrogen™ IAEDANS (1,5-IAEDANS, 5-((((2-Iodoacetyl)amino)ethyl)amino)Naphthalene-1-Sulfonic Acid)
The fluorescence of the thiol-reactive IAEDANS is quite dependent upon environment. Its conjugates frequently respond to ligand binding by undergoing spectral shifts and changes in fluorescence intensity that are determined by the degree of aqueous solvation. Advantages of this reagent include high water solubility above pH 4 and a relatively long fluorescence lifetime (10-15 nanoseconds), making the conjugates useful for fluorescence polarization and rotational studies. In addition, because it has a large Stokes shift and an emission that overlaps with the absorption of fluorescein, Alexa Fluor® 488, Oregon Green® dyes and BODIPY® FL dyes, IAEDANS is an excellent reagent for fluorescence resonance energy transfer (FRET) measurements.
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