This pyrimidine heterocyclic compound serves as a core synthetic intermediate in pharmaceutical and agrochemical sectors. Active chlorine and methyl groups enable nucleophilic substitution, coupling and cyclization reactions to build diversified target molecular structures. It is widely utilized to develop antibacterial, anti-inflammatory and antitumor drugs, enhancing molecular biological activity and pharmaceutical stability. In pesticide manufacturing, it is adopted to produce high-efficiency fungicides and herbicides for crop disease and weed control. It also works as raw material for biochemical reagents and fine chemical derivatives. Its reliable reaction activity and compact cyclic structure make it widely applied in new drug screening, pesticide development and advanced organic synthesis research.

The substance has moderate toxicity and irritating effects on human tissues. Inhalation of fine powder may trigger throat ache and respiratory discomfort, carry out all operations in ventilated environment and wear dust-proof mask. Direct skin contact easily causes redness, itching and mild inflammatory reaction, wear protective gloves and thoroughly clean exposed skin in time. Eye contact results in severe stinging and mucosal damage, rinse eyes continuously with running water for over fifteen minutes. Accidental ingestion will harm digestive organs. Thermal decomposition releases toxic chloride gas. Keep away from open flame, high temperature and oxidizing substances. Store separately from food supplies. Dispose waste strictly in accordance with hazardous waste regulations to prevent personal injury and environmental contamination.