Used as a key intermediate in the synthesis of agricultural chemicals, particularly herbicides and insecticides. Its reactive chloride groups allow for easy modification in multi-step reactions, enabling the introduction of various functional groups to build active ingredients. Commonly employed in the development of sulfonylurea-type herbicides due to its ability to form stable pyrimidine-based structures that target specific plant enzymes. Also utilized in the preparation of pharmaceuticals where the pyrimidine core is part of the active molecule. Its versatility in nucleophilic substitution reactions makes it valuable in both agrochemical and medicinal chemistry research.