Used as a key intermediate in the synthesis of pharmaceuticals and agrochemicals, particularly in the development of bioactive molecules with antimicrobial and anti-inflammatory properties. Its reactive bromomethyl group allows for easy functionalization, making it valuable in constructing complex heterocyclic compounds. Commonly employed in medicinal chemistry for structure-activity relationship (SAR) studies due to its ability to act as an alkylating agent in ring systems. Also utilized in the preparation of dyes and functional materials where halogenated pyrazolone derivatives enhance photostability and colorfastness.