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 readily forms amide or ester derivatives, making it valuable for constructing complex molecules. It is especially useful in the development of bioactive compounds, including potential anti-inflammatory and antimicrobial agents. The pyrazole core is a common motif in medicinal chemistry, and derivatives built from this compound are explored for their kinase inhibition and pesticidal properties. Its ability to undergo acylation reactions under mild conditions enhances its utility in multi-step synthesis.