Greenleafpharm Anastrozole chemical Names:α,α,α?,α-tetramethyl-5-(1H-1,2,4-triazol-1-ylmethyl)-1,3- benzenediacetonitrile Formula: C17H19N5 Molecular Weight: 293.4 CAS#: 120511-73-11 Ref.Standard :Enterprise Standard Description: White or practically White Crystalline Powder Melting Point: 80-85.0°C Assay: ≥99.0% Letrozole chemical Names:4,4-(1H-1,2,4-triazol-1-ylmethylene)bis-Benzonitrile Formula: C17H11N5 Molecular Weight: 285.10 CAS#: 112809-51-5 Ref.Standard :Enterprise Standard Description: White or practically White Crystalline Powder Melting Point: 80-85.0°C Assay: ≥98.5%