Used primarily as an intermediate in organic synthesis, especially in the production of pharmaceuticals and agrochemicals. It serves as an acylating agent to introduce the 4-ethoxybenzoyl group into various compounds. Commonly applied in the preparation of esters and amides that are key structures in active ingredients of herbicides and anti-inflammatory drugs. Also utilized in the synthesis of liquid crystals and dyes due to its aromatic and functional reactivity. Its reactivity makes it valuable in forming carbon-carbon and carbon-heteroatom bonds under controlled conditions.