Used as a key intermediate in the synthesis of agricultural chemicals, particularly herbicides and insecticides. Its structure allows for further functionalization to build active ingredients that target specific plant enzymes or pest metabolic pathways. Commonly employed in the development of sulfonylurea herbicides, which are valued for their low application rates and high selectivity. Also utilized in the preparation of certain pharmaceuticals where the pyrimidine core plays a role in biological activity. Its chloro and methylthio groups are reactive sites that enable coupling reactions in multi-step organic syntheses.