Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of pyrazole-based drugs with anti-inflammatory, analgesic, and antimicrobial properties. It serves as a building block in agrochemicals for creating herbicides and pesticides due to its reactive aldehyde group that allows functionalization. Also employed in the preparation of dyes and functional materials where heterocyclic frameworks enhance electronic or optical properties. Its hydrochloride form improves stability and solubility in aqueous reaction systems, making it suitable for use in various condensation and coupling reactions.