Fulvestrant Side chain impurity with CAS No: 148757-89-5 is an impurity standard of Fulvestrant.
Fulvestrant is a medication used in the treatment of hormone receptor-positive (HR-positive) breast cancer, specifically in postmenopausal women. Fulvestrant is belongs to a class of drugs known as selective estrogen receptor degraders (SERDs). Fulvestrant works by binding to the estrogen receptors on breast cancer cells and then blocking their activity, leading to a degradation of the receptors themselves. This action reduces the growth and proliferation of HR-positive breast cancer cells.
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