5-pregnene-2-one-3-spiro-2'-(4'-ethoxycarbonyl-1',3'-thiazolidine)

4-pregnene-2-one-3-spiro-2'-(4'-ethoxycarbonyl-1',3'-thiazolidine)

17β-(4''-ethoxycarbonyl-2''-methyl-1'',3''-thiazolidine-2''-yl)-5-androstene-3-spiro-2'-(4'-ethoxycarbonyl-1',3'-thiazolidine)

17β-(4''-ethoxycarbonyl-2''-methyl-1'',3''-thiazolidine-2''-yl)-4-androstene-3-spiro-2'-(4'-ethoxycarbonyl-1',3'-thiazolidine)

叔丁醇铝