Used in bioconjugation and labeling applications, particularly in chemiluminescent detection systems. It reacts with aldehydes and ketones to form stable hydrazone derivatives, enabling detection of glycans and other carbonyl-containing biomolecules. Commonly employed in immunoassays and nucleic acid probes for sensitive signal generation. Its acridine moiety provides chemiluminescent properties, allowing high-sensitivity detection in blotting techniques and cellular imaging when paired with appropriate oxidants and catalysts.