Used as a fluorescent probe in biochemical and analytical applications due to its strong emission properties. Commonly employed in enzyme activity assays, particularly for detecting esterase and lipase activity, where it acts as a fluorogenic substrate when derivatized. Also utilized in environmental studies to trace hydrolysis and photodegradation processes. Its hydroxyl and chloro functional groups allow for chemical modifications, making it useful in synthesizing more complex fluorescent markers. Additionally, it serves as an intermediate in the development of optical brighteners and laser dyes.