17-Iodovinyl-11-methoxyestradiol-3-methyl ether 17alpha-(125I)Iodovinyl-11beta-methoxyestradiol-3-methyl ether 19-Norpregna-1,3,5(10),20-tetraen-17-ol, 21-(iodo-125I)-3,11-dimethoxy-, (11beta,17alpha,20E)- 94887-70-4 IVMEME