Product Specification: CAS NO:112809-51-5 Chemical name: 4,4`-(1H-1,2,4-triazol-1-ylmethylene)bis-benzonitrile Chemical formula: C17H11N5 Appearance : White or off-white crystalline powder Assay : 99.0% Related Substance : 0.3% Single Impurty : 0.1% Loss On Drying : 0.5% Intermediate of Letrozole [Chemical Name]: 4-[1-(1, 2, 4-triazolyl)-methyl]-benzonitrile [CAS No. ]: 112809-25-3 [Chemical Name]: 4, 4'-Dicyanobenzophenone(intermediate of letrozole ) [CAS No. ]: 32445-66-5 [Chemical Name]: 4-[ -(4-cyanophenyl)-hydroxymethyl]-benzonitrile [CAS No. ]: 134521-16-7 [Chemical Name]: 4-[ -(4-cyanophenyl)-chloromethyl]-benzonitrile [CAS No. ]: 112809-57-1 25kg/drum