Letrozole is an aromatase inhibitor used in the treatment of hormone receptor-positive breast cancer in postmenopausal women. It reduces estrogen production by inhibiting the aromatase enzyme, thereby limiting the growth of estrogen-dependent tumors. Letrozole is taken orally and may also be used off-label to induce ovulation. Side effects include hot flashes, joint pain, and bone thinning.
Cleanchem is a trusted provider of premium pharmaceutical reference materials, specializing in Leucine and its associated compounds. Our catalog includes pharmacopeial and non-pharmacopeial Leucine impurities, metabolites, nitrosamine derivatives (N-NO compounds), and stable isotope-labeled products. These reference standards play a critical role in pharmaceutical R&D, supporting activities such as product formulation, ANDA and DMF submissions, quality assurance, analytical method development, and stability assessments.
All Leucine-related substances undergo comprehensive characterization and are delivered with complete Certificates of Analysis and supporting analytical documentation to ensure regulatory adherence. Upon request, we can offer EP/USP traceable standards. Our products are routinely re-evaluated to maintain consistent quality and performance.
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