Diisopropylcarbodiimide (N,N-DIC), also known as N,N'-diisopropylcarbodiimide, is an organic chemical substance with a molecular formula of C7H14N2 and a molecular weight of 126.20‌. It usually exists as a colorless to pale yellow liquid with a high boiling point (145-148°C) and a specific density (0.815g/mL at 20°C)‌. In addition, the compound is sensitive to moisture and has some water absorption‌. Diisopropylcarbodiimide has a wide range of applications in chemical synthesis. It is mainly used as a condensing agent in polypeptide synthesis, and is also used to prepare polymeric material additives and heterocyclic compounds, and plays an important role in biochemical industry, pharmaceuticals, industrial dye intermediates and other fields. In addition, it is also an important fine chemical product. It has the properties of general carbodiimide compounds and shows strong reactivity under specific catalytic conditions. It is a key reagent in a variety of chemical reactions.

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