This substituted pyrimidine intermediate features active chloro group and ethyl group, enabling nucleophilic substitution, coupling and cyclization reactions for constructing various heterocyclic molecules. It is widely adopted in the synthesis of anti-tumor, antibacterial and central nervous system drugs, effectively improving molecular lipophilicity and pharmacological activity. In agrochemical industry, it acts as a critical raw material for manufacturing fungicides, herbicides and insecticides. It is also used to prepare biochemical reagents and fine chemical derivatives. With reliable reactivity and stable structure, it is extensively applied in new drug development, pesticide innovation and advanced organic synthesis.

This liquid chemical is mildly flammable and irritant. Inhalation of volatile vapor may cause respiratory discomfort, so all operations must be carried out in well-ventilated areas with protective masks. Skin contact will lead to redness and itching, and eye exposure will cause stinging and conjunctival injury. Wear chemical-resistant gloves and protective clothing during handling; rinse the affected area with plenty of running water for more than 15 minutes in case of contact. Thermal decomposition produces toxic chloride fumes. Keep it far from open flame, high temperature and oxidizing substances. Do not store together with food or daily supplies. All waste liquid and residues must be disposed of in compliance with hazardous waste regulations to avoid personal injury and environmental pollution.