Abstract Iododesethyl tamoxifen aziridine (I-Tam-Az), an analog of the estrogen receptor- affinity label tamoxifen aziridine (Tam-Az) in which the ethyl group has been replaced by an iodine, has been prepared by two routes:(a) metallation of a bromotriarylethylene system, followed by reaction with iodine, and aziridinylation, and (b) direct iodination of a trimethylstannyl triarylethylene system that is the immediate precursor of I-Tam-Az. The ...