DBU is a sterically hindered amidine with basic properties. It is used as a catalyst, ligand, and non-nucleophilic base in organic synthesis. The catalytic activity of DBU significantly increases with rising temperature.

Chinese name: 1,8-Diazabicyclo[5.4.0]undec-7-ene

Chemical formula: C9H16N2

CAS Registry Number: 6674-22-2

Melting point: -70°C (203 K)

Appearance: Colorless or pale yellow liquid

Relative molecular mass: 152.13

Density: 1.018 g/mL

Boiling point: 80-83°C (0.6 mmHg)

Applications: Used in the production of semi-synthetic cephalosporin antibiotics, as well as in the formulation of deacidifiers, rust inhibitors, and advanced corrosion inhibitors.