1,1,3-Triethylurea is primarily used as a reagent in organic synthesis, particularly in the preparation of various chemical compounds. It serves as a useful intermediate in the synthesis of pharmaceuticals, where it can be employed to modify or create specific molecular structures. Additionally, it is utilized in the development of agrochemicals, aiding in the production of pesticides or herbicides. In research, it acts as a stabilizer or catalyst in certain reactions, contributing to the study of chemical processes. Its role in industrial applications includes its use in the manufacture of polymers and resins, where it helps enhance material properties.