Our N,N-Carbonyldiimidazole (CDI) is a high-purity white crystalline reagent engineered to activate carboxylic acids for nucleophilic substitution. Acting as a safer, solid alternative to highly toxic phosgene, CDI facilitates clean reactions by releasing only CO₂ and imidazole as relatively innocuous by-products. In 2026, it is the preferred choice for "Green Chemistry" applications because it eliminates the need for corrosive acid chlorides or strong auxiliary bases, significantly reducing side reactions and simplifying purification. We provide high-stability grades with 99%+ purity, specifically designed to maintain activity in anhydrous environments for critical API, peptide manufacturing, peptide synthesis, protein modification, and pharmaceutical research. Plays a highly crucial role in the synthesis of nucleic acid derivatives and other complex organic molecules. We are a global manufacturer of N,N-carbonyl diimidazole, specialised in producing high-purity (98.97%) CDI with large-scale production capacity, ensuring reliable lead times; comprehensive regulatory documentation (CoA); and consistent worldwide supply capabilities across all grades/forms/purity.