16-Epiestriol 547-81-9 EINECS 208-937-9 Epiestriol Epiestriol [INN] Epiestriolo [DCIT] Epiestriolum [INN-Latin] Epioestriol Epioestriolum Estra-1,3,5(10)-triene-3,16,17-triol, (16beta,17beta)- Estra-1,3,5(10)-triene-3,16beta,17beta-triol