Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the production of proton pump inhibitors like omeprazole and related drugs. Its reactive chloromethyl group allows for easy alkylation, making it valuable in forming carbon-nitrogen bonds during drug assembly. Commonly employed in research and industrial settings for constructing pyridine-based bioactive molecules. Also utilized in the development of agrochemicals and functional materials due to its versatile reactivity in cross-coupling and substitution reactions.