Used as a key intermediate in the synthesis of biologically active compounds, particularly in pharmaceuticals and agrochemicals. Its bromine functionality allows for cross-coupling reactions, enabling the introduction of diverse substituents. The hydroxymethyl group can be further modified to esters, ethers, or aldehydes, facilitating its use in building complex molecules. Commonly employed in the development of fungicides and antimicrobial agents due to the inherent activity of isothiazole derivatives. Also utilized in medicinal chemistry research for constructing novel heterocyclic systems with potential therapeutic properties.