Used as a key intermediate in the synthesis of pharmaceuticals, particularly in the development of kinase inhibitors for cancer treatment. It serves as a building block in the preparation of active pharmaceutical ingredients (APIs) due to its stable pyrimidine core and reactive chloro group, which allows for further functionalization. Commonly employed in research and development of anti-inflammatory and antiviral agents. Also utilized in agrochemicals for the design of novel pesticides owing to its aromatic and heterocyclic structure that enhances bioactivity.