This compound is primarily utilized in the field of pharmaceutical research and development. It serves as a key intermediate in the synthesis of various active pharmaceutical ingredients (APIs), particularly those targeting specific enzyme pathways or receptors. Its structure, featuring a chloro and cyano group, allows for further functionalization, making it valuable in the creation of novel drug candidates. Additionally, the deuterium-labeled ethyl group (ethyl-d5) enhances its application in metabolic studies, enabling researchers to track and analyze the behavior of drug molecules in biological systems with improved precision. This compound is also employed in the development of agrochemicals, where its pyrimidine core contributes to the design of herbicides or fungicides with enhanced efficacy and selectivity.