Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of antitubercular drugs like isoniazid derivatives. Acts as a ligand in coordination chemistry, forming complexes with metal ions for use in catalysis. Employed in organic synthesis to introduce nitrogen-containing functional groups through oxidation and coupling reactions. Its N-oxide functionality enhances reactivity in electrophilic substitution and facilitates directed ortho-metalation. Also explored in the preparation of agrochemicals and functional materials due to its stability and polarity.