3-diethylaminobenzoic acid is primarily used as an intermediate in the synthesis of various organic compounds. It plays a crucial role in the production of dyes and pigments, where it helps in achieving specific color properties and stability. Additionally, it is utilized in the pharmaceutical industry for the development of certain drugs, particularly those requiring a benzoic acid derivative as a building block. Its application extends to research laboratories, where it serves as a reagent in organic synthesis and chemical studies. The compound’s unique structure makes it valuable in creating specialized materials and fine chemicals.