Name	Tamoxifen citrate
Synonyms	(Z)-2-[4-(1,2-Diphenyl-1-butenyl)phenoxyl]-N,N-dimethyl-ethanamine-citrate; 1-p-beta-Dimethylaminoethoxyphenyl-trans-1,2-diphenylbut-1-ene citrate
Molecular Formula	C26H29NO.C6H8O7
Molecular Weight	563.64
CAS Registry Number	54965-24-1
EINECS	259-415-2

White crystalline powder

Loss on drying≤0.5%

Iron≤0.005%

Heavy metals≤0.001%

Total impurity≤1.0%

Individual impurity≤0.5%

E-isomer≤0.3%

Residual solvents≤0.5%

Acetone≤0.5%

Assay:99.0--101.0%

Tamoxifen Citrate Tablets (TCT) is a competitive estrogen antagonist and a nonsteroidal anti-estrogen drug. It is commonly used clinically to treat all forms of breast cancer, and it is especially suitable for postmenopausal female breast cancer patients who are estrogen receptor and progesterone receptor positive and have relatively low levels of prostrate specific antigens. Tamoxifen citrate has anti-tumor and anti-drug resistance effects, and it can be used for heart protection and treating advanced recurrent breast cancer and ovarian cancer.