Used as a fluorescent probe in biochemical assays, particularly for detecting aldehydes and ketones due to the reactivity of its aminooxy groups. Forms stable oxime derivatives with carbonyl compounds, enabling labeling and detection in complex biological samples. Its naphthalene core provides intrinsic fluorescence, making it useful in imaging and sensing applications without requiring external dyes. Also employed in chemoselective ligation strategies for bioconjugation in drug development and proteomics research.