Ethyl 5,6-Dichloronicotinate is used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of nicotinic receptor modulators and central nervous system agents. It is commonly employed in the production of agrochemicals, especially neonicotinoid insecticides, due to its reactive chlorine groups that allow further functionalization. Its ester group facilitates coupling reactions in organic synthesis, making it valuable in building complex heterocyclic compounds for drug discovery and crop protection.