The recommended source is Sigma Aldrich, product number T5648.
|Comment||The product is the TRANS isomer. Tamoxifen is the trans-isomer of a triphenylethylene derivative of Taxol and is active in the treatment of breast cancer, an oestrogen antagonist. It's cis isomer has no clinical uses and is not an oestrogen antagonist. (http://www.3dchem.com/molecules.asp?ID=181# Accessed October 2011|
|Storage||Store at +2-8 °C|
|Stability||Light sensitive. It should be stable for at least two years when stored desiccated at +2-8 °C in the dark|