Synonyms: Letrozole, Benzonitrile, 4,4′-(1H-1,2,4-triazol-1-ylmethylene)bis-, 4,4′-(1H-1,2,4-Triazol-1-ylmethylene)bis[benzonitrile], 4,4′-(1H-1,2,4-Triazol-1-ylmethylene)dibenzonitrile, 4-[1-(4-Cyanophenyl)-1-(1,2,4-triazol-1-yl)methyl]benzonitrile, CGS 20267, Femara, Lerozole, Letocor, Letoripe, Letrazole, Letrof L Lil, Letroz