4-Hydroxy-tamoxifen 4-Hydroxytamoxifen 4-Monohydroxytamoxifen 68392-35-8 Ici 79280 Phenol, 4-(1-(4-(2-(dimethylamino)ethoxy)phenyl)-2-phenyl-1-butenyl)-, Tamoxifen metabolite B para-Hydroxytamoxifen