Used as a labeled compound in environmental studies to trace the degradation pathways of nitroaromatic compounds in soil and water systems. Its isotopic labeling allows researchers to monitor metabolic transformations and identify intermediate products in bioremediation processes. Also employed in analytical chemistry as an internal standard for mass spectrometry, enabling accurate quantification of nitrobenzene and related compounds in complex mixtures. In research settings, it helps investigate reaction mechanisms involving nitro group reduction, particularly in the synthesis of aniline derivatives under controlled conditions.