Estriol Synonyms: TRIDESTRIN; (16-alpha,17-beta)-estra-1,3,5(10)-triene-3,16,17-triol CAS: 50-27-1 MF: C18H24O3 MW: 288.38 Packing: Foil bag Appearance: White Crystalline Powder Standards: USP27 Usage: A metabolite of Estradiol. An estrogenic metabolite considerably less potent than the hormone Estradiol