Used as an intermediate in the synthesis of pharmaceutical compounds, particularly in the development of kinase inhibitors and other biologically active molecules. Its structure allows for selective modifications, making it valuable in medicinal chemistry for creating drug candidates targeting cancer and inflammatory diseases. Commonly employed in cross-coupling reactions, such as Suzuki or Buchwald-Hartwig, to introduce the pyrimidine moiety into larger molecular frameworks. Also utilized in research settings for building piperazine-based compounds with potential neurological or antiviral activity.