| 摘要 |
This invention provides a compound having formula (I) wherein R and R<1> are each, independently, hydrogen or SO3<->X<+>; X<+> is alkali metal, alkaline earth metal, ammonium, alkylammonium containing 1-6 carbon atoms, or dialkylammonium containing 1-6 carbon atoms in each alkyl group, or trialkylammonium containing 1-6 carbon atoms in each alkyl group; with the proviso that R and R<1> are not both hydrogen, which is useful as a progestational agent. |
