This organic phosphorus compound with pyridine structure is an important fine chemical intermediate widely used in pharmaceutical synthesis, pesticide research and organic chemical industry. It has excellent chemical reaction activity and stable molecular structure, which can participate in various condensation, addition and coupling reactions to synthesize diversified nitrogen and phosphorus containing heterocyclic derivatives. In pharmaceutical field, it is mainly applied to develop anti-tumor, anti-inflammatory and analgesic drugs, and used as core raw material for preparing enzyme inhibitors and targeted therapeutic drugs. In agrochemical industry, it can be used to synthesize high-efficiency low-toxicity herbicides, fungicides and insecticides, effectively improve drug activity and reduce drug residue. It is also a common Horner-Wadsworth-Emmons reaction reagent, commonly used to prepare conjugated olefin compounds in laboratory synthesis and industrial production. With reliable performance and wide application range, it occupies an important position in modern fine chemical and biopharmaceutical raw material market.

This chemical belongs to moderately irritant chemical with certain health hazards. Inhalation of its vapor or mist will cause obvious irritation to respiratory tract, easily lead to cough, dizziness and throat discomfort, so all operations must be carried out in well ventilated environment with professional breathing protective equipment. Long-term skin contact will cause skin redness, itching and allergic inflammation, operators must wear acid and alkali resistant gloves and protective clothes, and clean exposed skin with clean water in time after contact. Once splashed into eyes, it will cause severe stinging pain and conjunctival injury, immediately flush eyes with plenty of running water for more than fifteen minutes and seek medical treatment quickly. Accidental ingestion will cause gastrointestinal pain, nausea and vomiting symptoms, do not take any food and drink plenty of warm water for emergency treatment. This product is combustible liquid, open fire and high temperature will cause burning, and high temperature decomposition will release toxic nitrogen oxide and phosphorus oxide harmful gas. It shall be stored separately from edible articles and oxidizing substances, and all waste shall be disposed in accordance with hazardous chemical treatment standards to avoid environmental pollution and personal injury.