Used as a key intermediate in the synthesis of agrochemicals and pharmaceuticals, particularly in the production of neonicotinoid insecticides. It serves as a building block for constructing nitrogen-containing heterocyclic compounds due to its reactive chloro and ester functional groups. Commonly employed in cross-coupling reactions and nucleophilic substitutions to introduce the nicotinate moiety in active ingredients. Also utilized in research and development of novel bioactive molecules with pesticidal or medicinal properties.