Diethyl azodicarboxylate (DEAD) is a chemical compound commonly used in organic synthesis. It appears as a colorless liquid and is known for its role as a reagent in various chemical reactions, particularly in the formation of carbon-carbon bonds. DEAD is often utilized in the preparation of azomethines and amides. This compound is an azo derivative, meaning it contains a nitrogen-nitrogen double bond. It is typically used in reactions involving nucleophiles, where it can act as a source of carbanions. Due to its reactivity, DEAD is valuable in the development of pharmaceuticals and other organic materials.