This substituted pyrimidine intermediate possesses active chlorine and methyl functional groups, which can undergo nucleophilic substitution, cross-coupling and cyclization reactions to construct various heterocyclic skeletons. It is widely used in the research and production of antitumor, antibacterial and antiviral drugs. Structural modification based on this compound can effectively improve the target binding capacity and metabolic stability of drug molecules, so it is frequently applied in pharmaceutical molecular design and process development. In agrochemical industry, it acts as an essential raw material for manufacturing high-efficiency fungicides and herbicides to protect crops from diseases and weeds. Besides, it is also utilized to prepare biochemical reagents and fine chemical derivatives. Owing to its moderate reactivity and stable chemical properties, it has become a common building block in new drug R&D, agrochemical production and modern organic synthesis.

This chemical is slightly toxic and has evident irritation to human tissues. Inhalation of fine dust will irritate the respiratory tract, causing sore throat, cough and breathing discomfort. All handling operations must be performed in a well-ventilated working area, and operators shall wear dust-proof masks and chemical-resistant gloves. Direct skin contact may lead to redness, itching and mild allergic inflammation. Once the substance gets into eyes, it will cause severe stinging pain and conjunctival injury. In case of accidental exposure, rinse the affected parts continuously with plenty of running water for more than 15 minutes. When exposed to high temperature, thermal decomposition will release toxic chloride fumes which are harmful to human health. Keep this product far away from open flames, high heat sources and strong oxidizing agents. Do not store it together with food or daily necessities. All waste residues and contaminated packages must be disposed of strictly in line with hazardous waste management regulations to avoid personal injury and environmental pollution.