This compound is a typical process related impurity of HATU peptide coupling reagent, which is commonly generated as guanidinium by-product during amide condensation and peptide synthesis reactions. It is mainly used as standard reference substance for pharmaceutical impurity research, quality control and analytical method validation in peptide drug industry. It can be applied to detect and quantify residual isomeric impurities in raw HATU materials and final peptide finished products, effectively control racemization side reactions and reduce unknown residue risks in synthesis process. It plays an important role in optimizing Fmoc solid-phase peptide synthesis technology, improving coupling efficiency and lowering production cost. Besides, it is widely used in new drug research, raw material registration application and pharmaceutical laboratory systematic suitability test. It can also be adopted to study reaction mechanism of urea type condensation agents, guide process improvement and product purification, and ensure the safety, stability and compliance of peptide medicines in clinical application and industrial mass production.

This chemical is classified as skin irritant and respiratory sensitizer with certain harmful effects on human body. Inhalation of its fine dust will cause throat soreness, cough and respiratory tract discomfort, so well ventilated working environment and dust-proof mask are necessary during handling. Direct skin contact easily leads to skin redness, itching and allergic inflammation, operators shall wear nitrile gloves and protective clothes, and clean exposed skin with soap and running water immediately after contact. Once splashed into eyes, it will cause severe stinging pain and conjunctival congestion, please rinse eyes continuously with plenty of clean water for more than fifteen minutes and seek medical treatment without delay. Accidental ingestion may result in nausea, vomiting and mild gastrointestinal disorder, do not induce vomiting and receive timely symptomatic treatment. It remains stable under low temperature dry condition, but tends to decompose rapidly under acid, alkali, high temperature and humid environment. Keep it far away from strong oxidants. All waste residues and waste liquid must be treated strictly in accordance with local hazardous waste disposal regulations to avoid water and soil environmental pollution.