4-Acetoxybenzoic acid is primarily used in the synthesis of polymers, particularly liquid crystal polymers (LCPs). These polymers are valued for their high strength, thermal stability, and resistance to chemicals, making them suitable for applications in electronics, automotive parts, and industrial components. Additionally, it serves as an intermediate in the production of pharmaceuticals, where it is utilized in the development of various active pharmaceutical ingredients (APIs). Its role in organic synthesis also extends to the creation of specialty chemicals and dyes, contributing to advancements in material science and industrial chemistry.