This compound is primarily used in research and development, particularly in the field of organic synthesis and pharmaceuticals. It serves as a deuterated analog of 3-ethoxyaniline, which is valuable in studies involving isotopic labeling. Such labeling helps in tracing chemical reactions and understanding metabolic pathways in drug development. Additionally, it is employed in the synthesis of complex molecules where the introduction of deuterium atoms enhances stability and alters pharmacokinetic properties. Its application is also seen in the production of specialized dyes and pigments, where isotopic substitution can influence color properties and durability.