Used primarily as an intermediate in organic synthesis, this compound plays a key role in the preparation of pharmaceuticals and agrochemicals. Its reactive carbonyl chloride group allows it to readily form amide or ester derivatives, making it valuable for constructing complex molecules. It is particularly useful in the development of bioactive compounds, including potential anti-inflammatory and antimicrobial agents. Due to the presence of the pyrazole ring—a common scaffold in medicinal chemistry—derivatives made from this compound are often explored for their biological activity in drug discovery programs.