Tamoxifen is a non-steroidal antiestrogen. Tamoxifen is a selective estrogen receptor modulator used to treat estrogen receptor positive breast cancer, reduce the risk of invasive breast cancer following surgery, or reduce the risk of breast cancer in high-risk women. Tamoxifen prevents the incidence of breast cancer in high-risk populations. Tamoxifen leads to a decrease in tumor growth factor α and insulin-like growth factor, and an increase in sex hormone binding globulin. The increase in sex hormone binding globulin limits the amount of freely available estradiol. These changes reduce levels of factors that stimulate tumor growth. Synthink is a most trusted source of Tamoxifen Degradation Impurity, Tamoxifen Genotoxic impurity, Tamoxifen Process Impurity, USP related compound, Tamoxifen Nitrosamine impurity, N-Nitroso impurity etc. which are listed on this page.