Tamoxifen EP Impurity D;2-[4-[(E)-1,2-Diphenylprop-1-enyl]p;Tamoxifen Citrate EP Impurity D as E-Isomer;(E)-2-[4-(1,2-Diphenyl-1-propenyl)phenoxy]-N,N-dimethylethanamine;2-[4-[(E)-1,2-Diphenylprop- 1-enyl]phenoxy]-N,N-dimethylethanamine;Ethanamine, 2-[4-(1,2-diphenyl-1-propenyl)phenoxy]-N,N-dimethyl-, (E)- (9CI);Imp. D (EP) E-Isomer:2-[4-[(E)-1,2-Diphenylprop-1-enyl]phenoxy]-N,N-dimethylethanamine