Tags: Chemical Compound, Chemical Substance.
8-Anilinonaphthalene-1-sulfonic acid (ANS) is an organic compound containing both a sulfonic acid and an amine group. This compound is used as a fluorescent molecular probe. For example ANS can be used to study conformational changes induced by ligand binding in proteins as ANS’s fluorescent properties will change as it binds to hydrophobic regions on the protein surface.