7-Hydroxycoumarin-3-carboxylic acid N-succinimidyl ester

7-Hydroxycoumarin-3-carboxylic acid N-succinimidyl ester is the amine-reactive succinimidyl ester of 7-Hydroxycoumarin-3-carboxylic acid. 7-Hydroxycoumarin-3-carboxylic acid N-succinimidyl ester is a blue fluorescent dye for labeling proteins and nucleic acids.