7-Hydroxycoumarin-3-carboxylic acid, SE is the amine-reactive succinimidyl ester of 7-Hydroxycoumarin-3-carboxylic acid. This coumarin is also increasingly used to label peptides, nucleotides and carbohydrates.
N-(3-Fluoranthyl)maleimide, a thiol fluorescent probe with a lifetime of 20 nsec, has a maximum excitation wavelength of 370 nm and is suitable for studying time-dependent processes of biopolymers [1].