Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of nicotinic receptor modulators and other central nervous system agents. It serves as a building block in medicinal chemistry for constructing pyridine-based drug candidates. Commonly employed in the preparation of kinase inhibitors and agrochemicals due to its reactive chloro and ester functionalities. Its tert-butyl ester group allows for selective deprotection under mild acidic conditions, enabling stepwise synthesis in complex molecule assembly.