A nitrile and triazole derivative that acts as a selective nonsteroidal aromatase inhibitor. It is used in the treatment of ESTROGEN NUCLEAR RECEPTOR-positive breast cancer in postmenopausal women.

Synonyms: ZD1033, 0, ZD 1033, Anastrazole, Arimidex, 1,3-Benzenediacetonitrile, alpha,alpha,alpha',alpha'-tetramethyl-5-(1H-1,2,4-triazol-1-ylmethyl)-, Anastrozole, 2Z07MYW1AZ, ZD-1033, ICI D1033, Zeneca ZD 1033, 2,2'-(5-(1H-1,2,4-triazol-1-ylmethyl)-1,3-phenylene)bis(2-methylpropionitrile)