4,4'-((4H-1,2,4-triazol-4-yl)methylene)dibenzonitrile; Iso Letrozole; 4,4'-(4H-1,2,4-Triazol-4-ylmethylene)bisbenzonitrile; USP Letrozole Related Compound A; Letrozole EP Impurity A
4,4'-((4H-1,2,4-triazol-4-yl)methylene)dibenzonitrile; Iso Letrozole; 4,4'-(4H-1,2,4-Triazol-4-ylmethylene)bisbenzonitrile; USP Letrozole Related Compound A; Letrozole EP Impurity A