(Z)-4-Hydroxytamoxifen (S8956-GRP)

(Z)-4-Hydroxytamoxifen ((Z)-4-OHT, trans-4-Hydroxytamoxifen, 4-Monohydroxytamoxifen) is a selective modulator of estrogen receptor (SERM) with IC50 of 3.3 nM for the [3H]oestradiol binding to oestrogen receptor.