Used primarily as a reactive intermediate in organic synthesis, this compound serves in the preparation of esters and amides through acylation reactions. Its α,β-unsaturated acid chloride structure makes it valuable for constructing conjugated systems in pharmaceuticals and agrochemicals. It is also employed in the synthesis of flavor and fragrance compounds due to its ability to form unsaturated derivatives with distinct sensory properties. Handling requires caution due to its lachrymatory and moisture-sensitive nature.