4-Butoxyacetanilide is primarily used as an intermediate in the synthesis of various pharmaceuticals and organic compounds. It plays a significant role in the production of analgesics and antipyretics, contributing to the development of medications that alleviate pain and reduce fever. Additionally, it is utilized in the chemical industry for the preparation of dyes and pigments, where it acts as a key building block in creating colorants for textiles and other materials. Its application extends to research and development, where it is employed in the study of organic reactions and the synthesis of novel compounds with potential therapeutic or industrial uses.