Letrozole

Letrozole Impurities & Reference Standards

In pharmaceutical manufacturing, Letrozole functions as an active pharmaceutical ingredient (API) used in the formulation of a wide range of medicinal products. Letrozole is registered under CAS Number 112809-51-5. With molecular formula C17H11N5 and molecular weight 285.3 g/mol, its physicochemical identity is well characterized. Letrozole impurity reference standards are used to support assay development, purity testing, and stability studies in line with global pharmacopoeial requirements (ICH, USP, BP, EP). We offer Letrozole and its impurity standards with complete analytical documentation, including CoA and HPLC data, suitable for pharmaceutical quality control and regulatory submissions.