IAEDANS
chemical compound
IAEDANS is an organic fluorophore (fluorescent molecule). It stands for 5-({2-[(iodoacetyl)amino]ethyl}amino)naphthalene-1-sulfonic acid. It is widely used as a marker in fluorescence spectroscopy.
1,5-IAEDANS has a peak excitation wavelength of 336 nm and a peak emission wavelength of 490 nm. The extinction coefficient of the dye is 5700. It is soluble in dimethylformamide (DMF) or buffer above pH 6 and reacts primarily with thiols.
The absorption spectrum IAEDANS overlaps well with the emission spectrum of tryptophan, making it useful as an acceptor in FRET experiments.
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Datasets, specimens, observations and peer-reviewed methods provide the appropriate test for the technical claims summarized here. The source revision retrieved here is dated Jul 19, 2026. The linked authority identifier is Q908770. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “IAEDANS” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.