Used as an intermediate in the synthesis of pharmaceuticals, particularly in the development of nicotinic receptor modulators and other central nervous system agents. Commonly employed in medicinal chemistry for constructing pyridine-based drug candidates due to its reactive chloro and nitro functional groups, which allow further substitution and transformation. Also utilized in agrochemical research for developing novel pesticides and herbicides where pyridine derivatives show biological activity. Its ester group facilitates solubility and reactivity in multi-step organic syntheses.