11,13-(Epoxymethano)-13H-cyclopenta(a)phenanthrene, pregn-4-ene-3,20-deriv. 11-beta,21-Dihydroxy-3,20-dioxopregn-4-en-18-al 11-beta-18-Epoxy-18,21-dihydroxypregn-4-ene-3,20-dione 3,20-Diketo-11-beta,18-oxido-4-pregnene-18,21-diol 47468-70-2 6251-69-0 Pregn-4-ene-3,20-dione, 11,18-epoxy-18,21-dihydroxy-, (11-beta)- Pregn-4-ene-3,20-dione, 11-beta,18-epoxy-18,21-dihydroxy- Pregn-4-ene-3,20-dione, 11beta,18-epoxy-18,21-dihydroxy- (8CI)