Used as a specialty reagent in organic synthesis, particularly in the formation of azo-based polymers and dyes due to its diazene functionality and isocyanate reactivity. The compound enables covalent coupling with nucleophiles such as alcohols and amines, making it valuable in constructing functionalized azo compounds for photoresponsive materials. It also finds use in developing covalent inhibitors or probes in biochemical research, where the isocyanate group reacts selectively with amino or hydroxyl groups in biomolecules. Its (E)-configuration ensures structural rigidity, beneficial in designing molecular switches or liquid crystals. Handling requires caution due to the sensitivity and potential toxicity of both isocyanate and diazene groups.