This chlorinated methylpyrimidine is a vital nitrogen-containing heterocyclic intermediate widely used in pharmaceutical and agrochemical synthesis. The reactive chlorine atom and methyl group on the pyrimidine ring can undergo nucleophilic substitution, coupling, cyclization and condensation reactions to construct various pyrimidine derivative skeletons. It is commonly applied as a key building block for manufacturing antitumor drugs, antibacterial agents, antiviral intermediates and central nervous system pharmaceuticals. Meanwhile, it serves as an important raw material for high-efficiency pesticides, fungicides and herbicides, and is also extensively used in custom fine chemical synthesis and organic methodology research.

This pyrimidine derivative has low acute toxicity and mild irritating effect on human body. Inhalation of fine crystalline dust may irritate respiratory mucosa, causing sore throat, dry cough and slight chest discomfort. Skin contact may lead to local redness, itching and mild inflammatory reaction; long-term repeated contact may cause skin dryness and allergic symptoms in sensitive crowds. Eye contact will produce obvious burning pain and conjunctival congestion, which needs immediate continuous rinsing with plenty of clean water for more than 15 minutes. Accidental ingestion may induce mild gastrointestinal discomfort such as nausea and abdominal distension. All operations should be carried out in a well-ventilated fume hood with chemical-resistant gloves, safety goggles and dust mask. Keep the container tightly sealed, store in dry, cool and dark environment, and isolate from strong oxidants and strong alkalis. Waste residues and contaminated packaging must be disposed of in accordance with local hazardous waste regulations to avoid water, soil pollution and potential health risks.