4,4',4''-Methylidenetrisbenzonitrile
4,4',4''-METHYLIDENETRISBENZONITRILE;4,4',4 -METHYLIDENETRISBENZONITRILE(IMPURITY OF LETROZOLE);4,44methyledenetrisbenzonitrile;impurityofLetrozole;4,4’,4”-Methyledenetrisbenzonitrile ( Impurity of Letrozole );4,4',4''-Methylidynetrisbenzonitrile (Letrozole Impurity);4,4',4''-Methylidynetrisbenzonitrile
